PSLE
Natalie wanted to buy a jumpsuit. She saw a grey jumpsuit on sale at 20% discount and a white jumpsuit at 30% discount. Both jumpsuits had the same original price before the discounts. To buy the grey jumpsuit, Natalie would need $9.50 more that what she had. So Natalie bought the white jumpsuit. After that, she had $10 left.

1. What was the original price of the grey jumpsuit?
2. How much money did Natalie have at first?

	Grey jumpsuit	White jumpsuit
Before	100%	100%
Change	- 20%	- 30%
After	80%	70%

(a)
Difference in the discount between the grey jumpsuit and the white jumpsuit
= 30% - 20%
= 10%

Additional amount that Natalie needed to pay if she would buy the grey jumpsuit
= 9.50 + 10
= $19.50

10% →  19.50
100% → ^19.50₁₀ x 100 = 195

Original price of the grey jumpsuit = $195

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

Price of the white jumpsuit after discount
= ⁷⁰₁₀₀ x 195
= $136.50

Amount that Natalie had at first
= 136.50 + 10
= $146.50

Answer(s): (a) $195; (b) $146.50