PSLE A bookstore is having a book sale.
The 1st book is at 20% discount.
The 2nd book is at 25% discount.
The price of the 2nd book should be equal or lower than the price of the 1st book.
Nicole and Flynn each bought two books at the sale.
- Nicole's books were priced at $19 and $19. How much did she pay for them?
- Flynn paid a total of $54.35 for his two books. He paid $4.85 less for the 2nd book than the 1st book. What was the price of the 2nd book before discount?
|
1st book |
2nd book |
Total amount |
Original price
|
100% $19 |
100% $19 |
|
Discount |
- 20% |
- 25% |
|
Sale price |
80% |
75% |
? |
(a)
Selling price of the 1st book
= 80% x 19
=
80100 x 19
= $15.20
Selling price of 2nd book
= 75% x 19
=
75100 x 19
= $14.25
Total amount that Nicole paid
= 15.20 + 14.25
= $29.45
|
1st book |
2nd book |
Total amount |
Original price |
100% |
100% |
|
Discount |
- 20% |
- 25% |
|
Sale price |
80%
|
75%
|
|
Compare 1st book and 2nd book |
1 u + $4.85 |
1 u |
$54.35 |
(b)
Sale price of the 1st book = 1 u + 4.85
Sale price of the 2nd book = 1 u
Total amount that Flynn paid
= 1 u + 4.85 + 1 u
= 2 u + 4.85
2 u + 4.85 = 54.35
2 u = 54.35 - 4.85
2 u = 49.50
1 u = 49.50 ÷ 2 = 24.75
Sale price of the 2nd book = $24.75
75% of the price = $24.75
100% of the price =
24.7575 x 100 = $33
Selling price of the 2nd book before discount = $33
Answer(s): (a) $29.45; (b) $33