The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 car…

The average of seven numbers is 18. If one of the numbers is 17 and if it is replaced by 31, then the average becomes :

The average of odd numbers up to 100 is

The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is…

A student finds the average of 10 positive integers. Each integer contains two digits. By mistake, the boy interchanges …

Students of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, …

The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The a…

A has 50 coins of 10 paise denominations. While B has 10 coins of 50 paise denominations. C has 20 coins of 25 paise den…