Class V, W and X were given some lollipops to sell for their fund-raising project. The average number of lollipops the 3 classes had at first was 210. After Class W sold twice as many lollipops as Class V and Class X sold
56 as many lollipops as Class W, the average number of lollipops the 3 classes had left was 56. How many lollipops did Class V and Class X sell altogether?
Class V |
Class W |
Class X |
1x3 |
2x3 |
|
|
6x1 |
5x1 |
3 u |
6 u |
5 u |
Class V : Class W : Class X
3 : 6 : 5
Total number of lollipops that the 3 classes had at first
= 3 x 210
= 630
Number of lollipops that the 3 classes left
= 3 x 56
= 168
Number of lollipops that were sold by 3 classes
= 630 - 168
= 462
3 u + 6 u + 5 u = 462
14 u = 462
1 u = 462 ÷ 14 = 33
Total number of lollipops sold by Class V and Class X
= 3 u + 5 u
= 8 u
= 8 x 33
= 264
Answer(s): 264