PSLE
A fruit stall sold tomatoes at 90¢ and avocados at 60¢ each. Joelle bought some tomatoes and Erika bought some avocados from the stall. Joelle spent $0.30 more than Erika, but had 2 fruits fewer than Erika.

1. How many tomatoes did Joelle buy?
2. How much did Erika spend on the avocados?

	Tomatoes	Avocados
Number	1 u	1 u + 2
Value	0.9	0.6
Total value	0.9 u	0.6 u + 1.2

(a)
Number of tomatoes that Joelle bought = 1 u
Number of avocados that Erika bought = 1 u + 2

Amount that Joelle paid = 0.9 x 1 u = 0.9 u
Amount that Erika paid = 0.6(1 u + 2) = 0.6 u + 1.2

If Erika spent another $0.30, both Erika and Joelle would spend the same amount.

0.9 u = 0.6 u + 1.2 + 0.3
0.9 u - 0.6 u = 1.2 + 0.3
0.3 u = 1.5

1 u = 1.5 ÷ 0.3 = 5

Number of tomatoes that Joelle bought
= 1 u
= 5

(b)
Amount that Erika spent on the avocados
= 0.6 u + 1.2
= 0.6 x 5 + 1.2
= 3 + 1.2
= $4.20

Answer(s): (a) 5; (b) $4.20