The average height of a group of 9 boys is 132 cm. When Flynn, Caden and Harry left the group, the average height decreased by 12 cm. What is Flynn, Caden and Harry's total height?
| |
9 boys |
6 boys |
| Number |
9 |
6 |
| Value |
132 |
120 |
| Total value |
1188 |
720 |
Total number of boys after 3 boys left the group
= 9 - 3
= 6
New average height after 3 boys left the group
= 132 - 12
= 120 cm
Total height of 9 boys
= 9 x 132
= 1188 cm
Total height of 6 boys
= 6 x 120
= 720 cm
Total height of Flynn, Caden and Harry
= 1188 - 720
= 468 cm
Answer(s): 468 cm
