PSLE Kathy bought 2 fans of the same model at a sale. She paid $171.15 for them.
- What was the price of the fan before discount?
- Xavier also bought 2 such fans at the price before discount. How much more did Xavier pay than Kathy?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 20% |
- 75% |
|
After |
80% |
25% |
105% |
(a)
Amount that Kathy paid for the 2 fans in percent
= 80% + 25%
= 105%
105% → 171.15
1% → 171.15 ÷ 105 = 1.63
100% → 100 x 1.63 = $163
Price of the fan before discount = $163
(b)
Amount that Xavier paid more than Kathy
= 20% + 75%
= 95%
= 95 x 1.63
= $154.85
Answer(s): (a) $163; (b) $154.85