PSLE
Wendy wanted to buy a shirt. She saw a purple shirt on sale at 10% discount and a white shirt at 20% discount. Both shirts had the same original price before the discounts. To buy the purple shirt, Wendy would need $8.80 more that what she had. So Wendy bought the white shirt. After that, she had $16 left.

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

	Purple shirt	White shirt
Before	100%	100%
Change	- 10%	- 20%
After	90%	80%

(a)
Difference in the discount between the purple shirt and the white shirt
= 20% - 10%
= 10%

Additional amount that Wendy needed to pay if she would buy the purple shirt
= 8.80 + 16
= $24.80

10% →  24.80
100% → ^24.80₁₀ x 100 = 248

Original price of the purple shirt = $248

(b)
Price of the white shirt after discount in percentage
= 100% - 20%
= 80%

Price of the white shirt after discount
= ⁸⁰₁₀₀ x 248
= $198.40

Amount that Wendy had at first
= 198.40 + 16
= $214.40

Answer(s): (a) $248; (b) $214.40