The average height of 3 girls was 1.28 m. One of the girls, whose height was 1.1 m, left the group. What was the average height of the remaining girls?
|
3 girls |
2 girls |
Number |
3 |
2 |
Value |
1.28 |
? |
Total value |
3.84 |
2.74 |
Total height of 3 girls
= 3 x 1.28
= 3.84 m
Total height of the 2 remaining girls
= 3.84 - 1.1
= 2.74 m
Average height of the 2 remaining girls
= 2.74 ÷ 2
= 1.37 m
Answer(s): 1.37 m