The average height of a group of 7 boys is 134 cm. When Jenson, Asher and John joined the group, the average height increased by 10 cm. What is Jenson, Asher and John's total height?
| |
7 boys |
10 boys |
| Number |
7 |
10 |
| Value |
134 |
144 |
| Total value |
938 |
1440 |
Total number of boys after 3 more boys joined the group
= 7 + 3
= 10
New average height after 3 more boys joined the group
= 134 + 10
= 144 cm
Total height of 7 boys
= 7 x 134
= 938 cm
Total height of 10 boys
= 10 x 144
= 1440 cm
Total height of Jenson, Asher and John
= 1440 - 938
= 502 cm
Answer(s): 502 cm
