Question

A bookshop has a sale in which paperback books are sold at a 20% discount and

hardback books are sold at a 40% discount. Lucy bought three paperbacks for

£6 each and four hardbacks for £9 each.

Answer 1

Explanation:

Given:

Paper backs 20% off, Bought 3 at $6 each.

Hardbacks 40% off, Bought 4 for $9 each.

Solution:

Paperbacks:

Cost without discount = $6 x 3

Cost without discount = $18

In order to find percent of a number, change the percent to decimal and multiply.

Discount = $18 x 20%

Discount = $18 x .2

Discount = $3.20

Amount she paid with discount = $18 - $3.20

Amount she paid with discount = $14.40

Hardbacks:

Cost without discount = $9 x 4

Cost without discount = $36

In order to find percent of a number, change the percent to decimal and multiply.

Discount = $36 x 40%

Discount = $18 x .4

Discount = $7.20

Amount she paid with discount = $36 - $7.20

Amount she paid with discount = $28.80

Totals:

Total Amount she paid with discount = $28.80 + $14.40

Total Amount she paid with discount = $43.20