PSLE
A fruit stall sold apples at 90¢ and oranges at 60¢ each. Yoko bought some apples and Mary bought some oranges from the stall. Yoko spent $0.60 more than Mary, but had 4 fruits fewer than Mary.

1. How many apples did Yoko buy?
2. How much did Mary spend on the oranges?

	Apples	Oranges
Number	1 u	1 u + 4
Value	0.9	0.6
Total value	0.9 u	0.6 u + 2.4

(a)
Number of apples that Yoko bought = 1 u
Number of oranges that Mary bought = 1 u + 4

Amount that Yoko paid = 0.9 x 1 u = 0.9 u
Amount that Mary paid = 0.6(1 u + 4) = 0.6 u + 2.4

If Mary spent another $0.60, both Mary and Yoko would spend the same amount.

0.9 u = 0.6 u + 2.4 + 0.6
0.9 u - 0.6 u = 2.4 + 0.6
0.3 u = 3

1 u = 3 ÷ 0.3 = 10

Number of apples that Yoko bought
= 1 u
= 10

(b)
Amount that Mary spent on the oranges
= 0.6 u + 2.4
= 0.6 x 10 + 2.4
= 6 + 2.4
= $8.40

Answer(s): (a) 10; (b) $8.40