corrected exercises commercial calculations cap | 9 Exercises

Application: The Pastry of Delights

States :

La Pâtisserie des Délices wants to improve its financial management by optimizing the valuation of its products. The company generates a turnover mainly through the sale of its famous macarons. Currently, each macaron is sold at €3,50 including tax, and the purchase cost excluding tax is €1,50 per macaron. The applicable VAT is 5,5%. They sell an average of 2 macarons per month. They want to evaluate the margin, the margin rate, the markup rate and other essential indicators to better manage their business.

Work to do :

  1. Calculate the sales price excluding tax (HT) of a macaron.
  2. Determine the amount of unit margin made on each macaron.
  3. Calculate the margin rate of the macaroons sold.
  4. Find the markup rate of the macarons sold.
  5. Estimate the overall margin made on the monthly sale of macarons.

Proposed correction:

  1. The sales price including tax of a macaron is €3,50. To find the sales price excluding tax, we use the formula:
    PV excluding VAT = PV including VAT ÷ (1 + VAT rate).
    Substituting, we have: €3,50 ÷ €1,055 = €3,32.
    So, the tax-free selling price of a macaron is €3,32.

  2. The unit margin is calculated by subtracting the pre-tax purchase price from the pre-tax sale price, i.e.:
    PV excluding VAT – PA excluding VAT = €3,32 – €1,50 = €1,82.
    The unit margin made on each macaron is therefore €1,82.

  3. The margin rate represents the profitability compared to the purchase cost. The formula is:

((PV HT – PA HT) ÷ PA HT) x 100.
((€3,32 – €1,50) ÷ €1,50) x 100 = 121,33%.
The margin rate of the macaroons sold is 121,33%.

  1. The markup rate indicates the profitability relative to the selling price. We use the formula:
    ((PV HT – PA HT) ÷ PV HT) x 100.
    Replacing, ((€3,32 – €1,50) ÷ €3,32) x 100 = 54,82%.
    The markup rate is therefore 54,82%.

  2. The overall margin is obtained by multiplying the unit margin by the quantity sold:
    Unit margin x Quantity = €1,82 x 2 = €000.
    So, the overall margin achieved monthly is €3.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
Overall Margin Unit margin x Quantity sold

Application: The Gadget Workshop

States :

L'Atelier des Gadgets is a start-up specializing in high-tech accessories. It recently launched a connected bracelet sold for €99 including tax. The cost price for each bracelet is €45 excluding tax. The applicable VAT is 20%. Each month, around 500 bracelets find buyers. The company wants to better understand certain management indicators in order to adjust its pricing strategy.

Work to do :

  1. Determine the selling price excluding tax of a bracelet.
  2. Calculate the amount of unit margin generated by the sale of a bracelet.
  3. Evaluate the margin rate of the bracelets.
  4. Find the markup rate for these bracelets.
  5. Calculate the overall monthly margin made from bracelet sales.

Proposed correction:

  1. To obtain the sales price excluding VAT, we must subtract the VAT from the sales price including VAT:
    PV excluding VAT = PV including VAT ÷ (1 + VAT rate).
    99 € ÷ 1,20 = 82,50 €.
    So, the selling price excluding tax of a bracelet is €82,50.

  2. The unit margin is the difference between the selling price excluding VAT and the purchase cost excluding VAT:
    82,50 € – 45 € = 37,50 €.
    Each bracelet sold generates a unit margin of €37,50.

  3. The margin rate is obtained by the following calculation:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€82,50 – €45) ÷ €45) x 100 = 83,33%.
The margin rate for bracelets is 83,33%.

  1. To find the markup rate, we use this formula:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€82,50 – €45) ÷ €82,50) x 100 = 45,45%.
    The brand rate of the bracelets is therefore 45,45%.

  2. The overall margin is calculated by multiplying the unit margin by the number of bracelets sold:
    €37,50 x 500 = €18.
    The overall monthly margin amounts to €18.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
Overall Margin Unit margin x Quantity sold

Application: Modern Boilermaking

States :

Chaudronnerie Moderne, which specializes in the manufacture of metal parts, mass-produces ball bearings. These bearings are sold for €24 excluding VAT each, while their production cost is €18 excluding VAT. Since the market is competitive, the company sells an average of 1 bearings per month. The financial director wants to estimate the monthly financial performance of this product.

Work to do :

  1. Calculate the unit margin on each bearing.
  2. Determine the bearing margin rate.
  3. Find the markup rate on all bearings.
  4. Calculate the overall margin for monthly sales.
  5. If Chaudronnerie Moderne increases its selling price excluding tax by 10%, what would the new unit margin be?

Proposed correction:

  1. The unit margin is obtained by subtracting the pre-tax purchase cost from the pre-tax selling price:
    24 € – 18 € = 6 €.
    The unit margin on each bearing is therefore €6.

  2. The margin rate is calculated as follows:
    ((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€24 – €18) ÷ €18) x 100 = 33,33%.
    The rolling margin rate is 33,33%.

  3. The markup rate is determined using the following formula:

((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€24 – €18) ÷ €24) x 100 = 25%.
So the markup rate of bearings is 25%.

  1. The overall margin is calculated as the unit margin multiplied by the number of bearings sold:
    €6 x €1 = €200.
    The overall margin for monthly sales therefore amounts to €7.

  2. If the selling price excluding tax increases by 10%, it will be:
    €24 x 1,10 = €26,40.
    The new unit margin would then be: €26,40 – €18 = €8,40.
    The new unit margin after the price increase is therefore €8,40.

Formulas Used:

Title Formulas
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
Overall Margin Unit margin x Quantity sold
New PV HT Old PV HT x (1 + increase rate)

Application: Pauline's Flowers

States :

Les Fleurs de Pauline is a family business selling flowers online. Each bouquet sold on their site costs €45 including tax. The cost to compose each bouquet is €25 excluding tax. The applicable VAT is 5,5%. On average, 800 bouquets are sold each month. The company questions its performance indicators to make decisions on its pricing strategy.

Work to do :

  1. Calculate the selling price excluding tax of a bouquet.
  2. Determine the unit margin on the sale of a bouquet.
  3. Compare the margin rate to the markup rate.
  4. Evaluate the overall margin achieved within a month.
  5. If Pauline wants to reduce the sales price including tax by 10% to increase sales, what would the new sales price excluding tax be?

Proposed correction:

  1. To determine the selling price excluding VAT, you must subtract the VAT from the selling price including VAT:
    PV HT = PV TTC ÷ (1 + VAT rate) = €45 ÷ 1,055 = €42,70.
    The selling price excluding tax of a bouquet is €42,70.

  2. The unit margin is calculated by taking the difference between the selling price excluding tax and the cost excluding tax:
    42,70 € – 25 € = 17,70 €.
    Each bouquet sold generates a unit margin of €17,70.

  3. Margin rate is different from markup rate. Let’s calculate them:

Margin Rate: ((PV HT – PA HT) ÷ PA HT) x 100 = ((€42,70 – €25) ÷ €25) x 100 = 70,80%.
Markup Rate: ((PV HT – PA HT) ÷ PV HT) x 100 = ((€42,70 – €25) ÷ €42,70) x 100 = 41,45%.
The margin rate is higher than the markup rate, indicating good control of purchasing costs.

  1. The monthly overall margin is:
    Unit margin x Quantity = €17,70 x 800 = €14.
    The overall margin achieved monthly is €14.

  2. If Pauline applies a 10% reduction on the sales price including tax, it will become:
    €45 x (1 – 0,10) = €40,50.
    The selling price excluding VAT will correspond to: €40,50 ÷ 1,055 = €38,39.
    Thus, the new selling price excluding tax would be €38,39.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
New PV including VAT Former PV including VAT x (1 – reduction rate)

Application: Eco Cars

States :

Les Voitures Éco is a company that specializes in the sale of used electric cars. Each car is sold at a price of €15 including VAT. The reconditioning cost for each vehicle is €000 excluding VAT. The VAT applicable for this type of product is 12%. Each month, the company manages to sell 000 cars. The company wants to evaluate its margins and profitability.

Work to do :

  1. Calculate the selling price excluding tax of a car.
  2. Determine the unit margin for each car sold.
  3. What is the margin rate on car sales?
  4. Calculate the markup rate for these sales.
  5. If Les Voitures Éco wants to reduce its reconditioning cost to €11 excluding VAT, what would the new unit margin be?

Proposed correction:

  1. The selling price excluding VAT is calculated by removing VAT from the selling price including VAT:
    PV excluding VAT = PV including VAT ÷ (1 + VAT rate) = €15 ÷ 000 = €1,20.
    So, the selling price excluding tax of a car is €12.

  2. The unit margin is the difference between the selling price excluding VAT and the cost excluding VAT:
    €12 – €500 = €12.
    The unit margin per car sold is therefore €500.

  3. The margin rate is calculated using the formula:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€12 – €500) ÷ €12) x 000 = 12%.
The margin rate on cars sold is 4,17%.

  1. The markup rate is established as follows:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€12 – €500) ÷ €12) x 000 = 12%.
    The markup rate for selling cars is therefore 4%.

  2. If the reconditioning cost drops to €11 excluding VAT, the new unit margin will be:
    €12 – €500 = €11.
    The new unit margin would be €1.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100

Application: Elegance Jewelry

States :

Bijoux Élégance is an online store specializing in the sale of handcrafted necklaces. Each necklace is sold at €120 including tax. The production cost of a necklace is €75 excluding tax. The VAT to be applied is 20%. On average, 100 necklaces are sold each month. The company wants to analyze its profitability to improve its business strategy.

Work to do :

  1. What is the value of the selling price excluding tax for each necklace?
  2. Calculate the unit margin amount for a necklace.
  3. What is the margin rate for Bijoux Élégance?
  4. Find the markup rate applied to the necklaces.
  5. If the store wants to increase VAT to 25% in anticipation of a reform, what would be the new sales price including tax without changing the sales price excluding tax?

Proposed correction:

  1. The selling price excluding tax is calculated using the formula:
    PV HT = PV TTC ÷ (1 + VAT rate) = €120 ÷ 1,20 = €100.
    So, the selling price excluding tax of a necklace is €100.

  2. The unit margin is found by subtracting the cost excluding tax from the selling price excluding tax:
    100 € – 75 € = 25 €.
    The unit margin for each necklace is therefore €25.

  3. The margin rate is obtained by the following calculation:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€100 – €75) ÷ €75) x 100 = 33,33%.
Bijoux Élégance’s margin rate is 33,33%.

  1. To calculate the markup rate:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€100 – €75) ÷ €100) x 100 = 25%.
    The applied markup rate is 25%.

  2. If VAT rises to 25%, the calculation remains PV including VAT with the constant sales price excluding VAT:
    New VAT-inclusive PV = VAT-exclusive PV x (1 + new VAT rate) = €100 x 1,25 = €125.
    The new sales price including VAT, increased VAT, is €125.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
New PV including VAT PV HT x (1 + new VAT rate)

Application: Sacha's Notebooks

States :

Les Cahiers de Sacha is an online stationery store that sells creative notebook sets. A complete set is offered at €28 including tax. The purchase cost of the stationery set is €12 excluding tax. VAT is 5,5%. The company sells about 300 sets per month. They want to refine their profitability analysis to optimize their margins.

Work to do :

  1. Calculate the price excluding VAT of a set of notebooks.
  2. What would be the unit margin amount per set sold?
  3. Determine the margin rate achieved by Les Cahiers de Sacha.
  4. What is the markup rate applied?
  5. Consider an increase in the purchase cost to €15 excluding VAT; redetermine the unit margin.

Proposed correction:

  1. To obtain the selling price excluding VAT:
    PV HT = PV TTC ÷ (1 + VAT rate) = €28 ÷ 1,055 = €26,54.
    The selling price excluding VAT of a set is €26,54.

  2. The unit margin is the difference between the selling price excluding VAT and the purchase cost excluding VAT:
    26,54 € – 12 € = 14,54 €.
    The unit margin per set sold is €14,54.

  3. The margin rate is calculated by:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€26,54 – €12) ÷ €12) x 100 = 121,17%.
The margin rate for Les Cahiers de Sacha is 121,17%.

  1. The markup rate is determined as follows:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€26,54 – €12) ÷ €26,54) x 100 = 54,79%.
    The markup rate used by Les Cahiers de Sacha is therefore 54,79%.

  2. If the purchase cost rises to €15 excluding VAT, the new unit margin will be:
    26,54 € – 15 € = 11,54 €.
    The unit margin, with the increased cost, would then be €11,54.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100

Application: TechSonic

States :

TechSonic produces wireless headphones that are marketed at €110 including VAT. The production cost of a pair is €70 excluding VAT. The applicable VAT is 20%. The company sells approximately 1 pairs each month. TechSonic wants to understand the dynamics of its margins to better calibrate its production.

Work to do :

  1. What is the value of the selling price excluding VAT?
  2. Evaluate the unit margin on each pair sold.
  3. What is the margin rate of the headphones sold?
  4. Calculate TechSonic's markup rate.
  5. If TechSonic decides to reduce the production cost to €65 excluding VAT, what would the new unit margin be?

Proposed correction:

  1. To determine the selling price excluding VAT:
    PV HT = PV TTC ÷ (1 + VAT rate) = €110 ÷ 1,20 = €91,67.
    The selling price excluding tax is therefore €91,67.

  2. The unit margin is calculated with the following formula:
    91,67 € – 70 € = 21,67 €.
    Thus, the unit margin per earphone sold amounts to €21,67.

  3. The margin rate is defined by:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€91,67 – €70) ÷ €70) x 100 = 31%.
The margin rate of the headphones is 31%.

  1. The markup rate is calculated using this formula:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€91,67 – €70) ÷ €91,67) x 100 = 23,63%.
    The markup rate is 23,63%.

  2. If the production cost decreases to €65 excluding VAT, the new unit margin would be:
    91,67 € – 65 € = 26,67 €.
    This new unit margin would therefore be €26,67.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100

Application: Alpine Hiking Shoes

States :

Alpine Hiking Shoes offers sturdy shoes sold at €180 including VAT. The manufacturing cost of a pair is €120 excluding VAT. VAT is 20%. Each month, approximately 600 pairs are sold. The company wants to better understand its financial situation to optimize its product offering.

Work to do :

  1. Convert the sale price to a value excluding VAT.
  2. Determine how much each pair sold brings in unit margin.
  3. Analyze the margin rate of shoes.
  4. Calculate the markup rate achieved.
  5. Let's imagine that the sales price including tax is reduced by 5%, what would the new price excluding tax be?

Proposed correction:

  1. The selling price excluding tax is obtained by:
    PV HT = PV TTC ÷ (1 + VAT rate) = €180 ÷ 1,20 = €150.
    The selling price excluding tax is therefore €150.

  2. The unit margin is calculated by deducting the cost excluding tax from the selling price excluding tax:
    150 € – 120 € = 30 €.
    Thus, each pair sold brings in a unit margin of €30.

  3. The margin rate is defined by:

((PV excluding tax – PA excluding tax) ÷ PA excluding tax) x 100 = ((€150 – €120) ÷ €120) x 100 = 25%.
The markup on shoes is 25%.

  1. The mark rate is given by:
    ((PV excluding tax – PA excluding tax) ÷ PV excluding tax) x 100 = ((€150 – €120) ÷ €150) x 100 = 20%.
    The mark rate achieved is 20%.

  2. If the sales price including tax is reduced by 5%, the calculation is then:
    New PV including tax = Old PV including tax x (1 – 0,05) = €180 x 0,95 = €171.
    So, the new price excluding VAT becomes: €171 ÷ 1,20 = €142,50.
    The new price excluding VAT, after this reduction, would be €142,50.

Formulas Used:

Title Formulas
Sale price excl. VAT PV incl. VAT ÷ (1 + VAT rate)
Unit Margin PV HT – PA HT
Margin rate ((PV HT – PA HT) ÷ PA HT) x 100
Brand taxes ((PV HT – PA HT) ÷ PV HT) x 100
New PV including VAT Former PV including VAT x (1 – reduction rate)

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