PSLE A store is having a book sale.
The 1st book is at 5% discount.
The 2nd book is at 35% discount.
The price of the 2nd book should be equal or lower than the price of the 1st book.
Kimberly and Daniel each bought two books at the sale.
- Kimberly's books were priced at $32 and $33. How much did she pay for them?
- Daniel paid a total of $58.85 for his two books. He paid $13.35 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% $33 |
100% $32 |
|
Discount |
- 5% |
- 35% |
|
Sale price |
95% |
65% |
? |
(a)
Selling price of the 1st book
= 95% x 33
=
95100 x 33
= $31.35
Selling price of 2nd book
= 65% x 32
=
65100 x 32
= $20.80
Total amount that Kimberly paid
= 31.35 + 20.80
= $52.15
|
1st book |
2nd book |
Total amount |
Original price |
100% |
100% |
|
Discount |
- 5% |
- 35% |
|
Sale price |
95%
|
65%
|
|
Compare 1st book and 2nd book |
1 u + $13.35 |
1 u |
$58.85 |
(b)
Sale price of the 1st book = 1 u + 13.35
Sale price of the 2nd book = 1 u
Total amount that Daniel paid
= 1 u + 13.35 + 1 u
= 2 u + 13.35
2 u + 13.35 = 58.85
2 u = 58.85 - 13.35
2 u = 45.50
1 u = 45.50 ÷ 2 = 22.75
Sale price of the 2nd book = $22.75
65% of the price = $22.75
100% of the price =
22.7565 x 100 = $35
Selling price of the 2nd book before discount = $35
Answer(s): (a) $52.15; (b) $35