PSLE Risa bought 2 fans of the same model at a sale. She paid $166.60 for them.
- What was the price of the fan before discount?
- Bobby also bought 2 such fans at the price before discount. How much more did Bobby pay than Risa?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 45% |
- 70% |
|
After |
55% |
30% |
85% |
(a)
Amount that Risa paid for the 2 fans in percent
= 55% + 30%
= 85%
85% → 166.60
1% → 166.60 ÷ 85 = 1.96
100% → 100 x 1.96 = $196
Price of the fan before discount = $196
(b)
Amount that Bobby paid more than Risa
= 45% + 70%
= 115%
= 115 x 1.96
= $225.40
Answer(s): (a) $196; (b) $225.40