The average height of a group of 5 boys is 101 cm. When Ahmad, Tim and Owen left the group, the average height decreased by 12 cm. What is Ahmad, Tim and Owen's total height?
| |
5 boys |
2 boys |
| Number |
5 |
2 |
| Value |
101 |
89 |
| Total value |
505 |
178 |
Total number of boys after 3 boys left the group
= 5 - 3
= 2
New average height after 3 boys left the group
= 101 - 12
= 89 cm
Total height of 5 boys
= 5 x 101
= 505 cm
Total height of 2 boys
= 2 x 89
= 178 cm
Total height of Ahmad, Tim and Owen
= 505 - 178
= 327 cm
Answer(s): 327 cm
