PSLE Ken and Risa bought some chocolate chip puffs. Each of them paid $52.50. Risa bought 9 more chocolate chip puffs as she used a 30% discount coupon.
- How many chocolate chip puffs did Risa buy?
- How much did Ken pay for 1 chocolate chip puff?
(a)
The 30% discount is the savings that Risa enjoyed. She used her savings to buy 9 more chocolate chip puffs.
30% → 9
1% →
930100% →
930 x 100 = 30
Number of puffs that Risa bought = 30
(b)
Number of puffs that Ken bought
= 30 - 9
= 21
Amount that Ken paid for 1 chocolate chip puff
= 52.50 ÷ 21
= $2.50
Answer(s): (a) 30; (b) $2.50