O P Malhotra, S K Gupta and, Anubhuti Gangal Solutions for Chapter: Average, Exercise 2: Revision Exercise

The average age of $30$ pupils is $11$ years. Find the total age of the pupils. Write the answer in the number of years.

Find the average of the first $6$ multiples of $5$.

The average height of $5$ pupils in a class is $140 \mathrm{c}\mathrm{m}$.The total height of $4$ pupils is $590 \mathrm{c}\mathrm{m}$, if the height of the fifth pupil is $k\mathrm{cm}$, find $k$.

The average temperature for Monday, Tuesday and Wednesday, was $43°$. The average for Tuesday, Wednesday and Thursday was $46°$, that for Thursday being $48°$. What was the temperature on Monday?

The average age of $6$ men is $37$, and one of them is $42$. Find the average age of the other five men. Write the answer in the number of years.

The average of $15$ numbers is $25$. If $4$ is subtracted from every number, what will be new average?

If $16a+16b=48$, what is the average of $a$ and $b$?

The sum of five numbers is $555$. The average of the first two is $75$ and the third number is $115$. What is the average of last two numbers?