A
Q. 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 ?
Explanation by: Akash Lawaniya
Sum of height of the 5 boys = (25 × 1.4 - 20 × 1.55) m = 4 m ∴ Required average = (4/5) = 0.8 m
You must be Logged in to update hint/solution
Related MCQs on Math
Q. At what time between 5 and 6 o' clock are the hands of a 3 minutes apart ?
Q. Find the third proportional term of 9 and 12.
Q. If 146 Is divisible by 5^n, and then find the maximum value of n.
Q. If a sum doubles in 6 years, how much will it be in 8 years ?
Q. What least number must be subtracted from 13601, so that the remainder is divisible by 87 ?
Learn All Math MCQs
Download our easy to use, user friendly Android App from Play Store. And learn MCQs with one click.
Discusssion
Login to discuss.