Average age of 6 sons of a family is 8 years. Average age of sons together with their parents is 22 years. If the father…

In a class there are 32 boys and 28 girls. The average age of the boys in the class is 14 years and the average age of t…

The arithmetic mean of the following numbers : 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7…

In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to…

The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and…

The average of nine number is 50. The average of first five numbers is 54 and that of the last three numbers is 52. Then…

A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must …

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