PSLE A bookstore 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.
- Jaslyn's books were priced at $27 and $35. How much did she pay for them?
- Dylan paid a total of $30.65 for his two books. He paid $11.15 more for the 1st book than the 2nd book. What was the price of the 2nd book before discount?
|
1st book |
2nd book |
Total amount |
Original price
|
100% $35 |
100% $27 |
|
Discount |
- 5% |
- 35% |
|
Sale price |
95% |
65% |
? |
(a)
Selling price of the 1st book
= 95% x 35
=
95100 x 35
= $33.25
Selling price of 2nd book
= 65% x 27
=
65100 x 27
= $17.55
Total amount that Jaslyn paid
= 33.25 + 17.55
= $50.80
|
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 + $11.15 |
1 u |
$30.65 |
(b)
Sale price of the 1st book = 1 u + 11.15
Sale price of the 2nd book = 1 u
Total amount that Dylan paid
= 1 u + 11.15 + 1 u
= 2 u + 11.15
2 u + 11.15 = 30.65
2 u = 30.65 - 11.15
2 u = 19.50
1 u = 19.50 ÷ 2 = 9.75
Sale price of the 2nd book = $9.75
65% of the price = $9.75
100% of the price =
9.7565 x 100 = $15
Selling price of the 2nd book before discount = $15
Answer(s): (a) $50.80; (b) $15