The average weight of 8 men is increased by 1.5 kg when one of the men, who weight 65 kg is replaced by a new man. The w…

Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one m…

In an engineering college the average salary of all engineering graduates from Mechanical trade is Rs. 2.45 lacs per ann…

The average of 80 boys in a class is 15. The average age of a group of 15 boys in the class is 16 and the average age of…

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

Average of two numbers is 8 and average of other three numbers is 3; the average of the five numbers is :

The average age of all the students of a class is 18 years. The average age of boys of the class is 20 years and that of…

The average monthly income of A and B is Rs. 14000, that of B and C is Rs. 15600 and A and C is Rs. 14400. The monthly i…