Cambridge International Mathematics

We are really

calculating the

in

the price!

percentage decrease

Topics in arithmetic (Chapter 10) 213

Example 4 Self Tutor

Monika bought shares in Woolworths atE 21 : 00 per share but was forced to sell them atE 18 : 60 each.

Find: a her loss per share b the loss per share as a percentage of the cost price.

a Loss

=cost price¡selling price

=E 21 : 00 ¡E 18 : 60

=E 2 : 40

) the loss made wasE 2 : 40 per share.

b Loss as a percentage of the cost price

=

loss

cost price

£100%

=

E 2 : 40

E 21 : 00

£100%

¼ 11 :4%

EXERCISE 10B.2

1 A tennis racquet bought forE 95 was then sold forE 132. Find the profit as a percentage of the cost

price.

2 A 25 m roll of carpet was bought wholesale for$435. If the whole roll is sold at$32: 50 per metre,

find:

a the selling price b the profit

c the profit as a percentage of the wholesale (cost) price.

3 Athos bought a crate of apricots for$17: 60. There were 11 kg of apricots in the crate. He sold the

apricots in his shop in 1 kilogram bags for$2: 85 each.

a How much did 1 kg of apricots cost Athos?

b What was his profit per kilogram?

c Find his profit as a percentage of his cost price.

4 A furniture store has a clearance sale. If a sofa costingE 1450

is marked down toE 980 , find:

a the loss made on the sale

b the loss as a percentage of the cost price.

5 Felipe pays$18 200for a boat, but because of financial difficulties he is soon forced to sell it for

$13 600.

a Find the loss on this sale. b Express this loss as a percentage of the cost price.

6 Sue bought a concert ticket for$55but was unable to go to the concert. She sold the ticket to a friend

for$40, as that was the best price she could get.

a Find her loss. b Express her loss as a percentage of her cost price.

7 A newly married couple purchased a two-bedroom unit for

$126 000. They spent another$14 300putting in a new

kitchen and bathroom. Two years later they had twins and

were forced to sell the unit so they could buy a bigger house.

Unfortunately, due to a down-turn in the market they received

only$107 500for the sale. What was:

a the total cost of the unit b the loss on the sale

c the loss as a percentage of their total costs?

IGCSE01

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y:\HAESE\IGCSE01\IG01_10\213IGCSE01_10.CDR Friday, 10 October 2008 11:49:37 AM PETER