PSLE
Zoe wanted to buy a windbreaker. She saw a blue windbreaker on sale at 25% discount and a white windbreaker at 35% discount. Both windbreakers had the same original price before the discounts. To buy the blue windbreaker, Zoe would need $9.60 more that what she had. So Zoe bought the white windbreaker. After that, she had $15 left.

1. What was the original price of the blue windbreaker?
2. How much money did Zoe have at first?

	Blue windbreaker	White windbreaker
Before	100%	100%
Change	- 25%	- 35%
After	75%	65%

(a)
Difference in the discount between the blue windbreaker and the white windbreaker
= 35% - 25%
= 10%

Additional amount that Zoe needed to pay if she would buy the blue windbreaker
= 9.60 + 15
= $24.60

10% →  24.60
100% → ^24.60₁₀ x 100 = 246

Original price of the blue windbreaker = $246

(b)
Price of the white windbreaker after discount in percentage
= 100% - 35%
= 65%

Price of the white windbreaker after discount
= ⁶⁵₁₀₀ x 246
= $159.90

Amount that Zoe had at first
= 159.90 + 15
= $174.90

Answer(s): (a) $246; (b) $174.90