The average height of 4 children was 1.55 m. One of the children, whose height was 1.1 m, left the group. What was the average height of the remaining children?
|
4 children |
3 children |
Number |
4 |
3 |
Value |
1.55 |
? |
Total value |
6.2 |
5.1 |
Total height of 4 children
= 4 x 1.55
= 6.2 m
Total height of the 3 remaining children
= 6.2 - 1.1
= 5.1 m
Average height of the 3 remaining children
= 5.1 ÷ 3
= 1.7 m
Answer(s): 1.7 m