1) The average age of 32 students is 10 years. If the teacher’s age is also included , the average age increases by one year. What is the teacher’s age in years?

(a) 21

(b) 43

(c ) 33

(d)53

(e)None of these

b

2) A cricketer has completed 10 innings and his average is 22.5 runs. How many runs must he make in the next innings so as to raise his average to 25 runs?

(a) 60

(b)56

(c )48

(d)50

(e)None of these

d

(3)The average age of 8 members of a committee is 40 years. A member of 55 years age retires and a man of age 39 years becomes a new member. The average age of the new committee member is

(a) 37 years

(b)39 years

(c )38 years

(d)40 years

(e)None of these

c

4) The average salary of 20 workers in an office is Rs 1900 p.m. If the manager’s salary is added, the average salary becomes Rs2000 per month. What is the manager’s annual salary?

(a)Rs. 45, 600

(b)Rs. 24, 000

(c)Rs. 200 (d)Rs. 46, 800

(e)None of these

e

(5) Average age of 40 boys of a class is 15 years. If the age of the teacher is included then their average age is 16 . What is the age of the teacher?

(a)61 years

(b)73 years

(c )56 years

(d)84 years

(e)None of these

c

6) The average of 2 , 7, 6 and x is 5, the average of 18, 1, 6 , x and y is 10, what is the value of y?

(a)5

(b)10

(c )30

(d)25

(e)20

e

(7) Average age of A, B and C is 36 years. If average age of B and C is 30 years and age of B is 22 years then what is the sum age of A and C?

(a)68 years

(b)86 years

(c )58 years

(d)61 years

(e)None of these

b

8) A man covers a distance of 6 km at the rate of 4 kmph and he covers a distance of 4 km at the rate of 3 kmph. What is his average speed?

(a)41/17 km/h

(b) 3 9/17 km/h

(c ) 2 9/17 km/h

(d) 6 1/3 km/h

(e) None of these

b

(9)A motor cyclist covers a distance of 30 km at the speed of 20 kmph. He returns from the same way at the speed of 40 kmph. What is his average speed for the whole journey?

(a)262/3 kmph

(b)137/13 kmph

(c )26 1/3 kmph

(d)381/2 kmph

(e)None

a

(10) In three numbers, the first number is double of the second and half of the third. If the average of three numbers is 56, then what is the largest number?

(a)96

(b)108

(c )92

(d)84

(e)None of these

a