PSLE Shiyun bought 2 fans of the same model at a sale. She paid $154.80 for them.
- What was the price of the fan before discount?
- Fred also bought 2 such fans at the price before discount. How much more did Fred pay than Shiyun?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 25% |
- 55% |
|
After |
75% |
45% |
120% |
(a)
Amount that Shiyun paid for the 2 fans in percent
= 75% + 45%
= 120%
120% → 154.80
1% → 154.80 ÷ 120 = 1.29
100% → 100 x 1.29 = $129
Price of the fan before discount = $129
(b)
Amount that Fred paid more than Shiyun
= 25% + 55%
= 80%
= 80 x 1.29
= $103.20
Answer(s): (a) $129; (b) $103.20