PSLE
Linda wanted to buy a coat. She saw a silver coat on sale at 20% discount and a purple coat at 40% discount. Both coats had the same original price before the discounts. To buy the silver coat, Linda would need $7.80 more that what she had. So Linda bought the purple coat. After that, she had $4 left.

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

	Silver coat	Purple coat
Before	100%	100%
Change	- 20%	- 40%
After	80%	60%

(a)
Difference in the discount between the silver coat and the purple coat
= 40% - 20%
= 20%

Additional amount that Linda needed to pay if she would buy the silver coat
= 7.80 + 4
= $11.80

20% →  11.80
100% → ^11.80₂₀ x 100 = 59

Original price of the silver coat = $59

(b)
Price of the purple coat after discount in percentage
= 100% - 40%
= 60%

Price of the purple coat after discount
= ⁶⁰₁₀₀ x 59
= $35.40

Amount that Linda had at first
= 35.40 + 4
= $39.40

Answer(s): (a) $59; (b) $39.40