PSLE Usha bought 2 fans of the same model at a sale. She paid $228.20 for them.
- What was the price of the fan before discount?
- Tom also bought 2 such fans at the price before discount. How much more did Tom pay than Usha?
|
Fan 1 |
Fan 2 |
Total |
Before |
100% |
100% |
200% |
Change (Discount) |
- 10% |
- 50% |
|
After |
90% |
50% |
140% |
(a)
Amount that Usha paid for the 2 fans in percent
= 90% + 50%
= 140%
140% → 228.20
1% → 228.20 ÷ 140 = 1.63
100% → 100 x 1.63 = $163
Price of the fan before discount = $163
(b)
Amount that Tom paid more than Usha
= 10% + 50%
= 60%
= 60 x 1.63
= $97.80
Answer(s): (a) $163; (b) $97.80