The average weight of A, B and C is 49 kg. If the average weight of A and B is 35 kg and that of B and C is 62 kg, then the weight of B (in kgs) is?
Let a, b, c, d, e, f, g be consecutive even numbers and j, k, l, m, n be consecutive odd numbers. What is the average of all the numbers?
1). 3(a + n)/2
2). (5l + 7d)/4
3). (a + b + m + n)/4
4). None of the above
The average age of 6 members of a family is 20 yeaRs. If the age of the servant is included, then the average age increase by 25%. What is the age (in years) of the servant?
1). 30
2). 35
3). 50
4). 55
For a charity fund, out of 21 students, 20 deposited Rs.60 each. The 21st student spent Rs.15 more than the average expenditure of all the other. The total money deposited by all of them was (in Rs.)
1). 1265
2). 1275
3). 1280
4). 1290
The average of three natural numbers, P, Q and R is 35. The average of P and Q is 42 while average of Q and R is 25. What is the average of squares of P and R?
1). 1733
2). 1619
3). 1661
4). 1793