The average weight of 8 people is increased by 2 kg when a new person comes in place of the person who weighs 50 kg. What is the weight of the newcomer?

The average of the three numbers is 60. The first number is one-fourth of the sum of the remaining two numbers, the first number is-

The average weight of three men A, Band C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E whose weight is 3 kg more than that of D, replaces A, the average weight of B, C, D and E becomes 79 kg. The weight of A is: 

If (a + b): (b + c): (c + a) = 5: 6: 9 and a + b + c = 10. What is the value of c?

The average monthly income of A and B is Rs.15,050 , and the average monthly income of B and C is Rs.15,350 and the average income of A and C is Rs.15,200. The monthly income of A is.

The average of four consecutive odd numbers is 36. What is the smallest of these numbers?

Average age of x students in a group is 20. When 4 new students are admitted with a age of 7.5 years each, then the average is decreased by 5. What is the value of x?

The average weight of A, B, and C is 52 kg. If the average weight of B and C is 44 kg and that of C and A is 46 kg, then what will be the weight of C?