PSLE
Xylia wanted to buy a sweater. She saw a grey sweater on sale at 10% discount and a brown sweater at 30% discount. Both sweaters had the same original price before the discounts. To buy the grey sweater, Xylia would need $8.80 more that what she had. So Xylia bought the brown sweater. After that, she had $1 left.

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

	Grey sweater	Brown sweater
Before	100%	100%
Change	- 10%	- 30%
After	90%	70%

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

Additional amount that Xylia needed to pay if she would buy the grey sweater
= 8.80 + 1
= $9.80

20% →  9.80
100% → ^9.80₂₀ x 100 = 49

Original price of the grey sweater = $49

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

Price of the brown sweater after discount
= ⁷⁰₁₀₀ x 49
= $34.30

Amount that Xylia had at first
= 34.30 + 1
= $35.30

Answer(s): (a) $49; (b) $35.30