The average height of 4 pupils was 1.25 m. One of the pupils, whose height was 1.4 m, left the group. What was the average height of the remaining pupils?
|
4 pupils |
3 pupils |
Number |
4 |
3 |
Value |
1.25 |
? |
Total value |
5 |
3.6 |
Total height of 4 pupils
= 4 x 1.25
= 5 m
Total height of the 3 remaining pupils
= 5 - 1.4
= 3.6 m
Average height of the 3 remaining pupils
= 3.6 ÷ 3
= 1.2 m
Answer(s): 1.2 m