Class N, P and Q were given some caramel apples to sell for their fund-raising project. The average number of caramel apples the 3 classes had at first was 247. After Class P sold twice as many caramel apples as Class N and Class Q sold ³₄ as many caramel apples as Class P, the average number of caramel apples the 3 classes had left was 55. How many caramel apples did Class N and Class Q sell altogether?

Class N	Class P	Class Q
1x2	2x2
	4x1	3x1
2 u	4 u	3 u

Class N : Class P : Class Q
2 : 4 : 3

Total number of caramel apples that the 3 classes had at first
= 3 x 247
= 741

Number of caramel apples that the 3 classes left
= 3 x 55 
= 165

Number of caramel apples that were sold by 3 classes
= 741 - 165
= 576

2 u + 4 u + 3 u = 576
9 u = 576

1 u = 576 ÷ 9 = 64

Total number of caramel apples sold by Class N and Class Q
= 2 u + 3 u
= 5 u
= 5 x 64
= 320

Answer(s): 320