PSLE
A fruit stall sold apples at 70¢ and grapefruits at 40¢ each. Tammy bought some apples and Jane bought some grapefruits from the stall. Tammy spent $0.50 more than Jane, but had 4 fruits fewer than Jane.

1. How many apples did Tammy buy?
2. How much did Jane spend on the grapefruits?

	Apples	Grapefruits
Number	1 u	1 u + 4
Value	0.7	0.4
Total value	0.7 u	0.4 u + 1.6

(a)
Number of apples that Tammy bought = 1 u
Number of grapefruits that Jane bought = 1 u + 4

Amount that Tammy paid = 0.7 x 1 u = 0.7 u
Amount that Jane paid = 0.4(1 u + 4) = 0.4 u + 1.6

If Jane spent another $0.50, both Jane and Tammy would spend the same amount.

0.7 u = 0.4 u + 1.6 + 0.5
0.7 u - 0.4 u = 1.6 + 0.5
0.3 u = 2.1

1 u = 2.1 ÷ 0.3 = 7

Number of apples that Tammy bought
= 1 u
= 7

(b)
Amount that Jane spent on the grapefruits
= 0.4 u + 1.6
= 0.4 x 7 + 1.6
= 2.8 + 1.6
= $4.40

Answer(s): (a) 7; (b) $4.40