PSLE
Mary wanted to buy a skirt. She saw a green skirt on sale at 20% discount and a purple skirt at 40% discount. Both skirts had the same original price before the discounts. To buy the green skirt, Mary would need $9.40 more that what she had. So Mary bought the purple skirt. After that, she had $2 left.

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

	Green skirt	Purple skirt
Before	100%	100%
Change	- 20%	- 40%
After	80%	60%

(a)
Difference in the discount between the green skirt and the purple skirt
= 40% - 20%
= 20%

Additional amount that Mary needed to pay if she would buy the green skirt
= 9.40 + 2
= $11.40

20% →  11.40
100% → ^11.40₂₀ x 100 = 57

Original price of the green skirt = $57

(b)
Price of the purple skirt after discount in percentage
= 100% - 40%
= 60%

Price of the purple skirt after discount
= ⁶⁰₁₀₀ x 57
= $34.20

Amount that Mary had at first
= 34.20 + 2
= $36.20

Answer(s): (a) $57; (b) $36.20