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…

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs. 11.75. Of the remaining two bo…

The average of six numbers is 20. If one number is removed, the average becomes 15. What is the number removed ?

The average expenditure of a man for the first five months is Rs. 1200 and for the next seven months is Rs. 1300. If he …

The mean of the first ten even natural number is-

The average age of Ram and his two children is 17 years and the average age of Ram's wife and the same children is 16 ye…

The average age of a family of 10 members is 20 years. If the age of the youngest member of the family is 10 years, then…

The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20 kg. If the averag…