Harry bought 4 times as many caramel bars as candy bars. The total mass of caramel bars and candy bars was 2500 g. The mass of candy bars was 140 g less than that of the caramel bars. The mass of 1 candy bar was 85 g heavier than 1 caramel bar.

1. Find the number of caramel bars that Harry bought.
2. Find the mass of 1 candy bar.

	Caramel Bars	Candy Bars	Total
Number of sets	4 sets	1 set
Compare each	1 u	1 u + 85
Total value	1320 g	1180 g	2500 g

(a)
Mass of candy bars = 1 set
Mass of caramel bars = 4 sets

Mass of candy bars = (2500 - 140) ÷ 2 = 1180 g
Mass of caramel bars = 1180 + 140 = 1320 g

Mass of 1 set of candy bars = 1180 g
Mass of 1 set of caramel bars = 1320 ÷ 4 = 330 g

Difference in the mass between 1 set of candy bars and 1 set of caramel bars
= 1180 - 330
= 850 g

Number of items in each set
= 850 ÷ 85
= 10

Number of caramel bars
= 4 x 10
= 40

(b)
Mass of 1 candy bar
= 1180 ÷ 10
= 118 g

Answer(s): (a) 40; (b) 118 g