PSLE Fiona bought 2 fans of the same model at a sale. She paid $67.10 for them.
- What was the price of the fan before discount?
- Oliver also bought 2 such fans at the price before discount. How much more did Oliver pay than Fiona?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 20% |
- 70% |
|
After |
80% |
30% |
110% |
(a)
Amount that Fiona paid for the 2 fans in percent
= 80% + 30%
= 110%
110% → 67.10
1% → 67.10 ÷ 110 = 0.61
100% → 100 x 0.61 = $61
Price of the fan before discount = $61
(b)
Amount that Oliver paid more than Fiona
= 20% + 70%
= 90%
= 90 x 0.61
= $54.90
Answer(s): (a) $61; (b) $54.90