PSLE
Usha wanted to buy a coat. She saw a red coat on sale at 10% discount and a yellow coat at 30% discount. Both coats had the same original price before the discounts. To buy the red coat, Usha would need $4.40 more that what she had. So Usha bought the yellow coat. After that, she had $7 left.

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

	Red coat	Yellow coat
Before	100%	100%
Change	- 10%	- 30%
After	90%	70%

(a)
Difference in the discount between the red coat and the yellow coat
= 30% - 10%
= 20%

Additional amount that Usha needed to pay if she would buy the red coat
= 4.40 + 7
= $11.40

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

Original price of the red coat = $57

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

Price of the yellow coat after discount
= ⁷⁰₁₀₀ x 57
= $39.90

Amount that Usha had at first
= 39.90 + 7
= $46.90

Answer(s): (a) $57; (b) $46.90