PSLE Abi bought 2 fans of the same model at a sale. She paid $137.70 for them.
- What was the price of the fan before discount?
- Simon also bought 2 such fans at the price before discount. How much more did Simon pay than Abi?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 10% |
- 55% |
|
After |
90% |
45% |
135% |
(a)
Amount that Abi paid for the 2 fans in percent
= 90% + 45%
= 135%
135% → 137.70
1% → 137.70 ÷ 135 = 1.02
100% → 100 x 1.02 = $102
Price of the fan before discount = $102
(b)
Amount that Simon paid more than Abi
= 10% + 55%
= 65%
= 65 x 1.02
= $66.30
Answer(s): (a) $102; (b) $66.30