PSLE
Hilda wanted to buy a sweater. She saw a red sweater on sale at 20% discount and a blue sweater at 35% discount. Both sweaters had the same original price before the discounts. To buy the red sweater, Hilda would need $6.40 more that what she had. So Hilda bought the blue sweater. After that, she had $11 left.

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

	Red sweater	Blue sweater
Before	100%	100%
Change	- 20%	- 35%
After	80%	65%

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

Additional amount that Hilda needed to pay if she would buy the red sweater
= 6.40 + 11
= $17.40

15% →  17.40
100% → ^17.40₁₅ x 100 = 116

Original price of the red sweater = $116

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

Price of the blue sweater after discount
= ⁶⁵₁₀₀ x 116
= $75.40

Amount that Hilda had at first
= 75.40 + 11
= $86.40

Answer(s): (a) $116; (b) $86.40