The average monthly income of P and Q is Rs. 6000; that of Q and R is Rs. 5250; and that P and R is Rs. 5500. What is P&…

Find the average of cubes of first 49 positive integers.

The average weight of three boys A, B and C is $$\frac{{163}}{3}$$ kg, while the average weight of three boys B, D and E…

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was…

If the average of 5 consecutive integers is x then, find the average of next to next 5 consecutive integers.

The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1…

In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score for the whole c…

David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, mathematics, physics, chemistry and bi…