PSLE
Gem wanted to buy a blazer. She saw a green blazer on sale at 15% discount and a brown blazer at 25% discount. Both blazers had the same original price before the discounts. To buy the green blazer, Gem would need $4.20 more that what she had. So Gem bought the brown blazer. After that, she had $10 left.

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

	Green blazer	Brown blazer
Before	100%	100%
Change	- 15%	- 25%
After	85%	75%

(a)
Difference in the discount between the green blazer and the brown blazer
= 25% - 15%
= 10%

Additional amount that Gem needed to pay if she would buy the green blazer
= 4.20 + 10
= $14.20

10% →  14.20
100% → ^14.20₁₀ x 100 = 142

Original price of the green blazer = $142

(b)
Price of the brown blazer after discount in percentage
= 100% - 25%
= 75%

Price of the brown blazer after discount
= ⁷⁵₁₀₀ x 142
= $106.50

Amount that Gem had at first
= 106.50 + 10
= $116.50

Answer(s): (a) $142; (b) $116.50