The average height of 25 boys is 1.4 m. when 5 boys leave the group, then the average height increases 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
Question ID - 50860 | SaraNextGen Top Answer The average height of 25 boys is 1.4 m. when 5 boys leave the group, then the average height increases 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
The average height of 25 boys is 1.4 m. when 5 boys leave the group, then the average height increases 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
1 Answer
127 votes
Answer Key / Explanation : (a) -
Sum of heights of the 5 boys = (
) m = 4 m.
Required average = 
m = 0.8 m.
127 votes
Answer Link
127