The average height of 25 boys is 1.4 m. When 5 boys leave the group, then the average height increased by 0.15 m. What is the average height of the 5 boys who leave ?
A. 0.8 m
B. 0.9 m
C. 0.95 m
D. 1.05 m
Answer: Option A
Solution (By Examveda Team)
Sum of height of the 5 boys= (25 × 1.4 - 20 × 1.55) m
= 4 m
∴ Required average
= $$\left( {\frac{4}{5}} \right)$$
= 0.8 m
This Question Belongs to Arithmetic Ability >> Average
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