The average height of a group of 5 boys is 119 cm. When Owen, Japheth and Zane joined the group, the average height increased by 7 cm. What is Owen, Japheth and Zane's total height?
| |
5 boys |
8 boys |
| Number |
5 |
8 |
| Value |
119 |
126 |
| Total value |
595 |
1008 |
Total number of boys after 3 more boys joined the group
= 5 + 3
= 8
New average height after 3 more boys joined the group
= 119 + 7
= 126 cm
Total height of 5 boys
= 5 x 119
= 595 cm
Total height of 8 boys
= 8 x 126
= 1008 cm
Total height of Owen, Japheth and Zane
= 1008 - 595
= 413 cm
Answer(s): 413 cm
