Class H, J and K were given some caramel apples to sell for their donation drive. The average number of caramel apples the 3 classes had at first was 218. After Class J sold thrice as many caramel apples as Class H and Class K sold ⁴₅ as many caramel apples as Class J, the average number of caramel apples the 3 classes had left was 58. How many caramel apples did Class H and Class K sell altogether?

Class H	Class J	Class K
1x5	3x5
	5x3	4x3
5 u	15 u	12 u

Class H : Class J : Class K
5 : 15 : 12

Total number of caramel apples that the 3 classes had at first
= 3 x 218
= 654

Number of caramel apples that the 3 classes left
= 3 x 58 
= 174

Number of caramel apples that were sold by 3 classes
= 654 - 174
= 480

5 u + 15 u + 12 u = 480
32 u = 480

1 u = 480 ÷ 32 = 15

Total number of caramel apples sold by Class H and Class K
= 5 u + 12 u
= 17 u
= 17 x 15
= 255

Answer(s): 255