PSLE Diana bought 2 fans of the same model at a sale. She paid $195.80 for them.
- What was the price of the fan before discount?
- Fred also bought 2 such fans at the price before discount. How much more did Fred pay than Diana?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 20% |
- 70% |
|
After |
80% |
30% |
110% |
(a)
Amount that Diana paid for the 2 fans in percent
= 80% + 30%
= 110%
110% → 195.80
1% → 195.80 ÷ 110 = 1.78
100% → 100 x 1.78 = $178
Price of the fan before discount = $178
(b)
Amount that Fred paid more than Diana
= 20% + 70%
= 90%
= 90 x 1.78
= $160.20
Answer(s): (a) $178; (b) $160.20