PSLE
Fiona wanted to buy a sweater. She saw a green sweater on sale at 10% discount and a gold sweater at 30% discount. Both sweaters had the same original price before the discounts. To buy the green sweater, Fiona would need $5.40 more that what she had. So Fiona bought the gold sweater. After that, she had $17 left.

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

	Green sweater	Gold sweater
Before	100%	100%
Change	- 10%	- 30%
After	90%	70%

(a)
Difference in the discount between the green sweater and the gold sweater
= 30% - 10%
= 20%

Additional amount that Fiona needed to pay if she would buy the green sweater
= 5.40 + 17
= $22.40

20% →  22.40
100% → ^22.40₂₀ x 100 = 112

Original price of the green sweater = $112

(b)
Price of the gold sweater after discount in percentage
= 100% - 30%
= 70%

Price of the gold sweater after discount
= ⁷⁰₁₀₀ x 112
= $78.40

Amount that Fiona had at first
= 78.40 + 17
= $95.40

Answer(s): (a) $112; (b) $95.40