PSLE Diana bought 2 fans of the same model at a sale. She paid $88.80 for them.
- What was the price of the fan before discount?
- Bobby also bought 2 such fans at the price before discount. How much more did Bobby pay than Diana?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 45% |
- 75% |
|
After |
55% |
25% |
80% |
(a)
Amount that Diana paid for the 2 fans in percent
= 55% + 25%
= 80%
80% → 88.80
1% → 88.80 ÷ 80 = 1.11
100% → 100 x 1.11 = $111
Price of the fan before discount = $111
(b)
Amount that Bobby paid more than Diana
= 45% + 75%
= 120%
= 120 x 1.11
= $133.20
Answer(s): (a) $111; (b) $133.20