Class W, X and Y were given some lollipops to sell for their charity drive. The average number of lollipops the 3 classes had at first was 219. After Class X sold four times as many lollipops as Class W and Class Y sold ²₃ as many lollipops as Class X, the average number of lollipops the 3 classes had left was 58. How many lollipops did Class W and Class Y sell altogether?

Class W	Class X	Class Y
1x3	4x3
	3x4	2x4
3 u	12 u	8 u

Class W : Class X : Class Y
3 : 12 : 8

Total number of lollipops that the 3 classes had at first
= 3 x 219
= 657

Number of lollipops that the 3 classes left
= 3 x 58 
= 174

Number of lollipops that were sold by 3 classes
= 657 - 174
= 483

3 u + 12 u + 8 u = 483
23 u = 483

1 u = 483 ÷ 23 = 21

Total number of lollipops sold by Class W and Class Y
= 3 u + 8 u
= 11 u
= 11 x 21
= 231

Answer(s): 231