PSLE
Jane wanted to buy a sweater. She saw a white sweater on sale at 15% discount and a black sweater at 35% discount. Both sweaters had the same original price before the discounts. To buy the white sweater, Jane would need $7.40 more that what she had. So Jane bought the black sweater. After that, she had $13 left.

1. What was the original price of the white sweater?
2. How much money did Jane have at first?

	White sweater	Black sweater
Before	100%	100%
Change	- 15%	- 35%
After	85%	65%

(a)
Difference in the discount between the white sweater and the black sweater
= 35% - 15%
= 20%

Additional amount that Jane needed to pay if she would buy the white sweater
= 7.40 + 13
= $20.40

20% →  20.40
100% → ^20.40₂₀ x 100 = 102

Original price of the white sweater = $102

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

Price of the black sweater after discount
= ⁶⁵₁₀₀ x 102
= $66.30

Amount that Jane had at first
= 66.30 + 13
= $79.30

Answer(s): (a) $102; (b) $79.30