PSLE Emma bought 2 fans of the same model at a sale. She paid $128.80 for them.
- What was the price of the fan before discount?
- Elijah also bought 2 such fans at the price before discount. How much more did Elijah pay than Emma?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 10% |
- 50% |
|
After |
90% |
50% |
140% |
(a)
Amount that Emma paid for the 2 fans in percent
= 90% + 50%
= 140%
140% → 128.80
1% → 128.80 ÷ 140 = 0.92
100% → 100 x 0.92 = $92
Price of the fan before discount = $92
(b)
Amount that Elijah paid more than Emma
= 10% + 50%
= 60%
= 60 x 0.92
= $55.20
Answer(s): (a) $92; (b) $55.20