PSLE
Erika wanted to buy a shirt. She saw a purple shirt on sale at 15% discount and a brown shirt at 30% discount. Both shirts had the same original price before the discounts. To buy the purple shirt, Erika would need $6.20 more that what she had. So Erika bought the brown shirt. After that, she had $16 left.

1. What was the original price of the purple shirt?
2. How much money did Erika have at first?

	Purple shirt	Brown shirt
Before	100%	100%
Change	- 15%	- 30%
After	85%	70%

(a)
Difference in the discount between the purple shirt and the brown shirt
= 30% - 15%
= 15%

Additional amount that Erika needed to pay if she would buy the purple shirt
= 6.20 + 16
= $22.20

15% →  22.20
100% → ^22.20₁₅ x 100 = 148

Original price of the purple shirt = $148

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

Price of the brown shirt after discount
= ⁷⁰₁₀₀ x 148
= $103.60

Amount that Erika had at first
= 103.60 + 16
= $119.60

Answer(s): (a) $148; (b) $119.60