PSLE
A fruit stall sold apples at 60¢ and coconuts at 40¢ each. Diana bought some apples and Penelope bought some coconuts from the stall. Penelope spent $1.20 less than Diana, but had 3 fruits more than Diana.

1. How many coconuts did Penelope buy?
2. How much did Diana spend on the apples?

	Apples	Coconuts
Number	1 u	1 u + 3
Value	0.6	0.4
Total value	0.6 u	0.4 u + 1.2

(a)
Number of apples that Diana bought = 1 u
Number of coconuts that Penelope bought = 1 u + 3

Amount that Diana paid = 0.6 x 1 u = 0.6 u
Amount that Penelope paid = 0.4(1 u + 3) = 0.4 u + 1.2

If Penelope spent another $1.20, both Penelope and Diana 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 coconuts that Penelope bought
= 1 u + 3
= 12 + 3
= 15

(b)
Amount that Diana spent on the apples
= 0.6 u 
= 0.6 x 12 
= $7.20

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