PSLE
A fruit stall sold papayas at 60¢ and peaches at 40¢ each. Mary bought some papayas and Min bought some peaches from the stall. Min spent $1.20 less than Mary, but had 3 fruits more than Mary.

1. How many peaches did Min buy?
2. How much did Mary spend on the papayas?

	Papayas	Peaches
Number	1 u	1 u + 3
Value	0.6	0.4
Total value	0.6 u	0.4 u + 1.2

(a)
Number of papayas that Mary bought = 1 u
Number of peaches that Min bought = 1 u + 3

Amount that Mary paid = 0.6 x 1 u = 0.6 u
Amount that Min paid = 0.4(1 u + 3) = 0.4 u + 1.2

If Min spent another $1.20, both Min and Mary would spend the same amount.

0.6 u = 0.4 u + 1.2 + 1.2
0.6 u - 0.4 u = 1.2 + 1.2
0.2 u = 2.4

1 u = 2.4 ÷ 0.2 = 12

Number of peaches that Min bought
= 1 u + 3
= 12 + 3
= 15

(b)
Amount that Mary spent on the papayas
= 0.6 u 
= 0.6 x 12 
= $7.20

Answer(s): (a) 12; (b) $7.20