PSLE Jen bought 2 fans of the same model at a sale. She paid $137.20 for them.
- What was the price of the fan before discount?
- Paul also bought 2 such fans at the price before discount. How much more did Paul pay than Jen?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 10% |
- 50% |
|
After |
90% |
50% |
140% |
(a)
Amount that Jen paid for the 2 fans in percent
= 90% + 50%
= 140%
140% → 137.20
1% → 137.20 ÷ 140 = 0.98
100% → 100 x 0.98 = $98
Price of the fan before discount = $98
(b)
Amount that Paul paid more than Jen
= 10% + 50%
= 60%
= 60 x 0.98
= $58.80
Answer(s): (a) $98; (b) $58.80