PSLE
A fruit stall sold limes at 60¢ and mangosteens at 30¢ each. Erika bought some limes and Marion bought some mangosteens from the stall. Erika spent $1.50 more than Marion, but had 6 fruits fewer than Marion.

1. How many limes did Erika buy?
2. How much did Marion spend on the mangosteens?

	Limes	Mangosteens
Number	1 u	1 u + 6
Value	0.6	0.3
Total value	0.6 u	0.3 u + 1.8

(a)
Number of limes that Erika bought = 1 u
Number of mangosteens that Marion bought = 1 u + 6

Amount that Erika paid = 0.6 x 1 u = 0.6 u
Amount that Marion paid = 0.3(1 u + 6) = 0.3 u + 1.8

If Marion spent another $1.50, both Marion and Erika would spend the same amount.

0.6 u = 0.3 u + 1.8 + 1.5
0.6 u - 0.3 u = 1.8 + 1.5
0.3 u = 3.3

1 u = 3.3 ÷ 0.3 = 11

Number of limes that Erika bought
= 1 u
= 11

(b)
Amount that Marion spent on the mangosteens
= 0.3 u + 1.8
= 0.3 x 11 + 1.8
= 3.3 + 1.8
= $5.10

Answer(s): (a) 11; (b) $5.10