PSLE
Hilda wanted to buy a skirt. She saw a grey skirt on sale at 25% discount and a purple skirt at 35% discount. Both skirts had the same original price before the discounts. To buy the grey skirt, Hilda would need $4.20 more that what she had. So Hilda bought the purple skirt. After that, she had $17 left.

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

	Grey skirt	Purple skirt
Before	100%	100%
Change	- 25%	- 35%
After	75%	65%

(a)
Difference in the discount between the grey skirt and the purple skirt
= 35% - 25%
= 10%

Additional amount that Hilda needed to pay if she would buy the grey skirt
= 4.20 + 17
= $21.20

10% →  21.20
100% → ^21.20₁₀ x 100 = 212

Original price of the grey skirt = $212

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

Price of the purple skirt after discount
= ⁶⁵₁₀₀ x 212
= $137.80

Amount that Hilda had at first
= 137.80 + 17
= $154.80

Answer(s): (a) $212; (b) $154.80