PSLE
A fruit stall sold dragon fruits at 70¢ and apples at 40¢ each. Emma bought some dragon fruits and Natalie bought some apples from the stall. Emma spent $1.20 more than Natalie, but had 6 fruits fewer than Natalie.

1. How many dragon fruits did Emma buy?
2. How much did Natalie spend on the apples?

	Dragon Fruits	Apples
Number	1 u	1 u + 6
Value	0.7	0.4
Total value	0.7 u	0.4 u + 2.4

(a)
Number of dragon fruits that Emma bought = 1 u
Number of apples that Natalie bought = 1 u + 6

Amount that Emma paid = 0.7 x 1 u = 0.7 u
Amount that Natalie paid = 0.4(1 u + 6) = 0.4 u + 2.4

If Natalie spent another $1.20, both Natalie and Emma would spend the same amount.

0.7 u = 0.4 u + 2.4 + 1.2
0.7 u - 0.4 u = 2.4 + 1.2
0.3 u = 3.6

1 u = 3.6 ÷ 0.3 = 12

Number of dragon fruits that Emma bought
= 1 u
= 12

(b)
Amount that Natalie spent on the apples
= 0.4 u + 2.4
= 0.4 x 12 + 2.4
= 4.8 + 2.4
= $7.20

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