PSLE
A fruit stall sold mangosteens at 90¢ and apples at 60¢ each. Raeann bought some mangosteens and Min bought some apples from the stall. Min spent $1.50 less than Raeann, but had 3 fruits more than Raeann.

1. How many apples did Min buy?
2. How much did Raeann spend on the mangosteens?

	Mangosteens	Apples
Number	1 u	1 u + 3
Value	0.9	0.6
Total value	0.9 u	0.6 u + 1.8

(a)
Number of mangosteens that Raeann bought = 1 u
Number of apples that Min bought = 1 u + 3

Amount that Raeann paid = 0.9 x 1 u = 0.9 u
Amount that Min paid = 0.6(1 u + 3) = 0.6 u + 1.8

If Min spent another $1.50, both Min and Raeann would spend the same amount.

0.9 u = 0.6 u + 1.8 + 1.5
0.9 u - 0.6 u = 1.8 + 1.5
0.3 u = 3.3

1 u = 3.3 ÷ 0.3 = 11

Number of apples that Min bought
= 1 u + 3
= 11 + 3
= 14

(b)
Amount that Raeann spent on the mangosteens
= 0.9 u 
= 0.9 x 11 
= $9.90

Answer(s): (a) 11; (b) $9.90