The average height of a group of 7 boys is 101 cm. When Tom, Ryan and Paul left the group, the average height decreased by 6 cm. What is Tom, Ryan and Paul's total height?
| |
7 boys |
4 boys |
| Number |
7 |
4 |
| Value |
101 |
95 |
| Total value |
707 |
380 |
Total number of boys after 3 boys left the group
= 7 - 3
= 4
New average height after 3 boys left the group
= 101 - 6
= 95 cm
Total height of 7 boys
= 7 x 101
= 707 cm
Total height of 4 boys
= 4 x 95
= 380 cm
Total height of Tom, Ryan and Paul
= 707 - 380
= 327 cm
Answer(s): 327 cm
