PSLE Gem bought 2 fans of the same model at a sale. She paid $80.10 for them.
- What was the price of the fan before discount?
- Will also bought 2 such fans at the price before discount. How much more did Will pay than Gem?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 45% |
- 65% |
|
After |
55% |
35% |
90% |
(a)
Amount that Gem paid for the 2 fans in percent
= 55% + 35%
= 90%
90% → 80.10
1% → 80.10 ÷ 90 = 0.89
100% → 100 x 0.89 = $89
Price of the fan before discount = $89
(b)
Amount that Will paid more than Gem
= 45% + 65%
= 110%
= 110 x 0.89
= $97.90
Answer(s): (a) $89; (b) $97.90