Class K, L and M were given some caramel apples to sell for their donation drive. The average number of caramel apples the 3 classes had at first was 242. After Class L sold twice as many caramel apples as Class K and Class M sold ⁵₆ as many caramel apples as Class L, the average number of caramel apples the 3 classes had left was 60. How many caramel apples did Class K and Class M sell altogether?

Class K	Class L	Class M
1x3	2x3
	6x1	5x1
3 u	6 u	5 u

Class K : Class L : Class M
3 : 6 : 5

Total number of caramel apples that the 3 classes had at first
= 3 x 242
= 726

Number of caramel apples that the 3 classes left
= 3 x 60 
= 180

Number of caramel apples that were sold by 3 classes
= 726 - 180
= 546

3 u + 6 u + 5 u = 546
14 u = 546

1 u = 546 ÷ 14 = 39

Total number of caramel apples sold by Class K and Class M
= 3 u + 5 u
= 8 u
= 8 x 39
= 312

Answer(s): 312