Lee bought 3 times as many candy bars as chocolate bars. The total mass of candy bars and chocolate bars was 724 g. The mass of chocolate bars was 44 g less than that of the candy bars. The mass of 1 chocolate bar was 53 g heavier than 1 candy bar.

1. Find the number of candy bars that Lee bought.
2. Find the mass of 1 chocolate bar.

	Candy Bars	Chocolate Bars	Total
Number of sets	3 sets	1 set
Compare each	1 u	1 u + 53
Total value	384 g	340 g	724 g

(a)
Mass of chocolate bars = 1 set
Mass of candy bars = 3 sets

Mass of chocolate bars = (724 - 44) ÷ 2 = 340 g
Mass of candy bars = 340 + 44 = 384 g

Mass of 1 set of chocolate bars = 340 g
Mass of 1 set of candy bars = 384 ÷ 3 = 128 g

Difference in the mass between 1 set of chocolate bars and 1 set of candy bars
= 340 - 128
= 212 g

Number of items in each set
= 212 ÷ 53
= 4

Number of candy bars
= 3 x 4
= 12

(b)
Mass of 1 chocolate bar
= 340 ÷ 4
= 85 g

Answer(s): (a) 12; (b) 85 g