The average height of 7 boys was 1.38 m. One of the boys, whose height was 1.2 m, left the group. What was the average height of the remaining boys?
|
7 boys |
6 boys |
Number |
7 |
6 |
Value |
1.38 |
? |
Total value |
9.66 |
8.46 |
Total height of 7 boys
= 7 x 1.38
= 9.66 m
Total height of the 6 remaining boys
= 9.66 - 1.2
= 8.46 m
Average height of the 6 remaining boys
= 8.46 ÷ 6
= 1.41 m
Answer(s): 1.41 m