PSLE
Victoria wanted to buy a vest. She saw a black vest on sale at 15% discount and a green vest at 35% discount. Both vests had the same original price before the discounts. To buy the black vest, Victoria would need $7.40 more that what she had. So Victoria bought the green vest. After that, she had $1 left.

1. What was the original price of the black vest?
2. How much money did Victoria have at first?

	Black vest	Green vest
Before	100%	100%
Change	- 15%	- 35%
After	85%	65%

(a)
Difference in the discount between the black vest and the green vest
= 35% - 15%
= 20%

Additional amount that Victoria needed to pay if she would buy the black vest
= 7.40 + 1
= $8.40

20% →  8.40
100% → ^8.40₂₀ x 100 = 42

Original price of the black vest = $42

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

Price of the green vest after discount
= ⁶⁵₁₀₀ x 42
= $27.30

Amount that Victoria had at first
= 27.30 + 1
= $28.30

Answer(s): (a) $42; (b) $28.30