Practice questions 4.3


1. Explain the following terms: (i) percentage margin (ii) percentage mark-up. 2. The cost of an item is €72 and it has a retail price of €89. Calculate the following, to one decimal place: (i) the percentage margin


(ii) the percentage mark-up.


3. A supermarket buys boxes of chocolates for €2 ⋅ 99 and sells them for €4 ⋅ 29. Calculate the following:


(i) the percentage margin (ii) the percentage mark-up. Give your answers to one decimal place.


4. A transition year mini-company sells school water bottles for €4 ⋅ 50. If this includes a mark-up of 20%, how much did the mini-company pay for the water bottles?


5. Copy and complete the table provided. Give your answers to two decimal places, where necessary.


Cost price (€)


(i) (ii)


(iii) (iv) (v)


8 100 550


1 500 0 ⋅ 70


1 ⋅ 85


6. Find the cost price of each of the following items. Show all work. Item Selling price (€) Percentage margin (%) Cost price (€)


(i) Bike


(ii) Phone (iii) Car


(iv) Tracksuit (v) Sunglasses


399 249


15 000 49 ⋅ 99 85 ⋅ 50


10 35


12 ⋅ 5 21 ⋅ 5 43


7. Find the profi t made (in euros) and the selling price of each of the following items. Show all work. Item


(i) Hotel stay (ii) Laptop (iii) Holiday (iv) Runners


(v) Apartment


20 35


2 400 84 ⋅ 99


450 000


17 ⋅ 5 22 ⋅ 8 7 ⋅ 2


8. A sports shop buys t-shirts for €25 and sells them for €49. Calculate the following, giving your answer to one decimal place:


(i) the percentage mark-up for the t-shirts (ii) the percentage margin for the t-shirts. The shop also sells runners with a percentage mark-up of 50%.


(iii) Calculate the percentage margin for these runners to one decimal place.


Section A Applying our skills 85


Cost price (€) Percentage margin (%) Profi t (€) Selling price (€) 200 550


Selling price (€)


10 40 200 –300


Profi t or loss (€)


Percentage mark-up


Percentage margin


4 Maths in business


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