PSLE
A fruit stall sold grapefruits at 60¢ and apples at 40¢ each. Pamela bought some grapefruits and Hilda bought some apples from the stall. Hilda spent $0.60 less than Pamela, but had 3 fruits more than Pamela.

1. How many apples did Hilda buy?
2. How much did Pamela spend on the grapefruits?

	Grapefruits	Apples
Number	1 u	1 u + 3
Value	0.6	0.4
Total value	0.6 u	0.4 u + 1.2

(a)
Number of grapefruits that Pamela bought = 1 u
Number of apples that Hilda bought = 1 u + 3

Amount that Pamela paid = 0.6 x 1 u = 0.6 u
Amount that Hilda paid = 0.4(1 u + 3) = 0.4 u + 1.2

If Hilda spent another $0.60, both Hilda and Pamela would spend the same amount.

0.6 u = 0.4 u + 1.2 + 0.6
0.6 u - 0.4 u = 1.2 + 0.6
0.2 u = 1.8

1 u = 1.8 ÷ 0.2 = 9

Number of apples that Hilda bought
= 1 u + 3
= 9 + 3
= 12

(b)
Amount that Pamela spent on the grapefruits
= 0.6 u 
= 0.6 x 9 
= $5.40

Answer(s): (a) 9; (b) $5.40