PSLE Xandra bought 2 fans of the same model at a sale. She paid $166.10 for them.
- What was the price of the fan before discount?
- Zane also bought 2 such fans at the price before discount. How much more did Zane pay than Xandra?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 20% |
- 70% |
|
After |
80% |
30% |
110% |
(a)
Amount that Xandra paid for the 2 fans in percent
= 80% + 30%
= 110%
110% → 166.10
1% → 166.10 ÷ 110 = 1.51
100% → 100 x 1.51 = $151
Price of the fan before discount = $151
(b)
Amount that Zane paid more than Xandra
= 20% + 70%
= 90%
= 90 x 1.51
= $135.90
Answer(s): (a) $151; (b) $135.90