PSLE
A fruit stall sold peaches at 70¢ and oranges at 40¢ each. Sabrina bought some peaches and Shannon bought some oranges from the stall. Shannon spent $0.80 less than Sabrina, but had 7 fruits more than Sabrina.

1. How many oranges did Shannon buy?
2. How much did Sabrina spend on the peaches?

	Peaches	Oranges
Number	1 u	1 u + 7
Value	0.7	0.4
Total value	0.7 u	0.4 u + 2.8

(a)
Number of peaches that Sabrina bought = 1 u
Number of oranges that Shannon bought = 1 u + 7

Amount that Sabrina paid = 0.7 x 1 u = 0.7 u
Amount that Shannon paid = 0.4(1 u + 7) = 0.4 u + 2.8

If Shannon spent another $0.80, both Shannon and Sabrina would spend the same amount.

0.7 u = 0.4 u + 2.8 + 0.8
0.7 u - 0.4 u = 2.8 + 0.8
0.3 u = 3.6

1 u = 3.6 ÷ 0.3 = 12

Number of oranges that Shannon bought
= 1 u + 7
= 12 + 7
= 19

(b)
Amount that Sabrina spent on the peaches
= 0.7 u 
= 0.7 x 12 
= $8.40

Answer(s): (a) 12; (b) $8.40