The average height of a group of 6 boys is 115 cm. When Gabriel, Wesley and Henry left the group, the average height decreased by 7 cm. What is Gabriel, Wesley and Henry's total height?
| |
6 boys |
3 boys |
| Number |
6 |
3 |
| Value |
115 |
108 |
| Total value |
690 |
324 |
Total number of boys after 3 boys left the group
= 6 - 3
= 3
New average height after 3 boys left the group
= 115 - 7
= 108 cm
Total height of 6 boys
= 6 x 115
= 690 cm
Total height of 3 boys
= 3 x 108
= 324 cm
Total height of Gabriel, Wesley and Henry
= 690 - 324
= 366 cm
Answer(s): 366 cm
