The average height of a group of 6 boys is 137 cm. When Nick, Japheth and Flynn left the group, the average height decreased by 11 cm. What is Nick, Japheth and Flynn's total height?
| |
6 boys |
3 boys |
| Number |
6 |
3 |
| Value |
137 |
126 |
| Total value |
822 |
378 |
Total number of boys after 3 boys left the group
= 6 - 3
= 3
New average height after 3 boys left the group
= 137 - 11
= 126 cm
Total height of 6 boys
= 6 x 137
= 822 cm
Total height of 3 boys
= 3 x 126
= 378 cm
Total height of Nick, Japheth and Flynn
= 822 - 378
= 444 cm
Answer(s): 444 cm
