PSLE
A fruit stall sold apples at 60¢ and mandarin oranges at 30¢ each. Joelle bought some apples and Mary bought some mandarin oranges from the stall. Mary spent $1.80 less than Joelle, but had 2 fruits more than Joelle.

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

	Apples	Mandarin Oranges
Number	1 u	1 u + 2
Value	0.6	0.3
Total value	0.6 u	0.3 u + 0.6

(a)
Number of apples that Joelle bought = 1 u
Number of mandarin oranges that Mary bought = 1 u + 2

Amount that Joelle paid = 0.6 x 1 u = 0.6 u
Amount that Mary paid = 0.3(1 u + 2) = 0.3 u + 0.6

If Mary spent another $1.80, both Mary and Joelle would spend the same amount.

0.6 u = 0.3 u + 0.6 + 1.8
0.6 u - 0.3 u = 0.6 + 1.8
0.3 u = 2.4

1 u = 2.4 ÷ 0.3 = 8

Number of mandarin oranges that Mary bought
= 1 u + 2
= 8 + 2
= 10

(b)
Amount that Joelle spent on the apples
= 0.6 u 
= 0.6 x 8 
= $4.80

Answer(s): (a) 8; (b) $4.80