Class N, P and Q were given some caramel apples to sell for their charity drive. The average number of caramel apples the 3 classes had at first was 222. After Class P sold thrice as many caramel apples as Class N and Class Q sold ⁵₆ as many caramel apples as Class P, the average number of caramel apples the 3 classes had left was 53. How many caramel apples did Class N and Class Q sell altogether?

Class N	Class P	Class Q
1x2	3x2
	6x1	5x1
2 u	6 u	5 u

Class N : Class P : Class Q
2 : 6 : 5

Total number of caramel apples that the 3 classes had at first
= 3 x 222
= 666

Number of caramel apples that the 3 classes left
= 3 x 53 
= 159

Number of caramel apples that were sold by 3 classes
= 666 - 159
= 507

2 u + 6 u + 5 u = 507
13 u = 507

1 u = 507 ÷ 13 = 39

Total number of caramel apples sold by Class N and Class Q
= 2 u + 5 u
= 7 u
= 7 x 39
= 273

Answer(s): 273