Class M, N and P were given some candy canes to sell for their charity drive. The average number of candy canes the 3 classes had at first was 228. After Class N sold thrice as many candy canes as Class M and Class P sold ³₄ as many candy canes as Class N, the average number of candy canes the 3 classes had left was 53. How many candy canes did Class M and Class P sell altogether?

Class M	Class N	Class P
1x4	3x4
	4x3	3x3
4 u	12 u	9 u

Class M : Class N : Class P
4 : 12 : 9

Total number of candy canes that the 3 classes had at first
= 3 x 228
= 684

Number of candy canes that the 3 classes left
= 3 x 53 
= 159

Number of candy canes that were sold by 3 classes
= 684 - 159
= 525

4 u + 12 u + 9 u = 525
25 u = 525

1 u = 525 ÷ 25 = 21

Total number of candy canes sold by Class M and Class P
= 4 u + 9 u
= 13 u
= 13 x 21
= 273

Answer(s): 273