A batsman in his 12<sup>th</sup> innings makes a score of 63 runs and there by increases his average score b…

A cricketer has a mean score of 60 runs in 10 innings. Find out how many runs are to be scored in the eleventh innings t…

The average of the ages of Sumit, Krishna and Rishabh is 43 and the average of the ages of Sumit, Rishabh and Rohit is 4…

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases…

Mr. Joe’s family consists of six people-himself, his wife and their four children. It is known that the average ag…

The average of 50 numbers is 30. If two numbers, 35 and 40 are discarded, then the average of the remaining numbers is n…

The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5…

There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 2…