PSLE
A fruit stall sold oranges at 60¢ and plums at 30¢ each. Victoria bought some oranges and Risa bought some plums from the stall. Risa spent $1.50 less than Victoria, but had 2 fruits more than Victoria.

1. How many plums did Risa buy?
2. How much did Victoria spend on the oranges?

	Oranges	Plums
Number	1 u	1 u + 2
Value	0.6	0.3
Total value	0.6 u	0.3 u + 0.6

(a)
Number of oranges that Victoria bought = 1 u
Number of plums that Risa bought = 1 u + 2

Amount that Victoria paid = 0.6 x 1 u = 0.6 u
Amount that Risa paid = 0.3(1 u + 2) = 0.3 u + 0.6

If Risa spent another $1.50, both Risa and Victoria would spend the same amount.

0.6 u = 0.3 u + 0.6 + 1.5
0.6 u - 0.3 u = 0.6 + 1.5
0.3 u = 2.1

1 u = 2.1 ÷ 0.3 = 7

Number of plums that Risa bought
= 1 u + 2
= 7 + 2
= 9

(b)
Amount that Victoria spent on the oranges
= 0.6 u 
= 0.6 x 7 
= $4.20

Answer(s): (a) 7; (b) $4.20