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

The average monthly income of a family of four earning members was Rs. 15130. One of the daughters in the family got mar…

A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found me…

The average of five numbers is 306.4. The average of the first two numbers is 431 and the average of the last two number…

A batsman makes a score of 84 runs in the 21<sup>st</sup> inning and thus increases his average by 2 runs. H…

Visitor to a show were charged Rs. 15 each on the first day, Rs. 7.50 each on the second day and Rs. 2.50 each on the th…

Out of 10 teachers of a school, one teacher retires and in place of him a new teacher 25 years old joins. As a result of…

The average of 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then…