PSLE Gem bought 2 fans of the same model at a sale. She paid $82.50 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 Gem?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 25% |
- 65% |
|
After |
75% |
35% |
110% |
(a)
Amount that Gem paid for the 2 fans in percent
= 75% + 35%
= 110%
110% → 82.50
1% → 82.50 ÷ 110 = 0.75
100% → 100 x 0.75 = $75
Price of the fan before discount = $75
(b)
Amount that Billy paid more than Gem
= 25% + 65%
= 90%
= 90 x 0.75
= $67.50
Answer(s): (a) $75; (b) $67.50