PSLE Emma bought 2 fans of the same model at a sale. She paid $54.05 for them.
- What was the price of the fan before discount?
- Billy also bought 2 such fans at the price before discount. How much more did Billy pay than Emma?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 35% |
- 50% |
|
After |
65% |
50% |
115% |
(a)
Amount that Emma paid for the 2 fans in percent
= 65% + 50%
= 115%
115% → 54.05
1% → 54.05 ÷ 115 = 0.47
100% → 100 x 0.47 = $47
Price of the fan before discount = $47
(b)
Amount that Billy paid more than Emma
= 35% + 50%
= 85%
= 85 x 0.47
= $39.95
Answer(s): (a) $47; (b) $39.95