PSLE Gillian bought 2 fans of the same model at a sale. She paid $47.70 for them.
- What was the price of the fan before discount?
- Ian also bought 2 such fans at the price before discount. How much more did Ian pay than Gillian?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 35% |
- 75% |
|
After |
65% |
25% |
90% |
(a)
Amount that Gillian paid for the 2 fans in percent
= 65% + 25%
= 90%
90% → 47.70
1% → 47.70 ÷ 90 = 0.53
100% → 100 x 0.53 = $53
Price of the fan before discount = $53
(b)
Amount that Ian paid more than Gillian
= 35% + 75%
= 110%
= 110 x 0.53
= $58.30
Answer(s): (a) $53; (b) $58.30