## Solve Problems on average:

1) What will be the average of first five multiples of 12? (Problems on average)

1. 36
2. 38
3. 40
4. 42

2) Average of five numbers is 20.If each number is multiplied by 2, what is going to be the new average?

1. 30
2. 40
3. 50
4. 60

3) If the average of three consecutive even numbers is 34, find the largest of these numbers.

1. 30
2. 32
3. 34
4. 36

4) 10 typists can type 600 pages in 8 hours.Find the typical number of pages typed by each typist in an hour

1. 7 pages
2. 7.5 pages
3. 8 pages
4. 8.5 pages

5) The average of Sohan’s marks in 6 subjects is 74. If his average in five subjects excluding science is 70 ,what percentage marks he obtained in science?

1. 94
2. 92
3. 90
4. 88

6) Average age of a group of 30 boys is 16 years. A boy of age 19 leaves the group and a new boy joins the group. If the new average age of the group is 15.8 years, find the age of the new boy.

1. 12 years
2. 13 years
3. 14 years
4. 15 years

7) The average weight of 10 men is decreased by 2 kg when one of them whose weight is 60 kg is replaced by a new man. What is the weight of the new man?

1. 35 kg
2. 40 kg
3. 45 kg
4. 50 kg

8)In a class the average age of 30 boys is 15 years. If we include the age of two teachers the average age increases by 1. Find the sum of ages of the two teachers.

1. 55 years
2. 58 years
3. 62 years
4. 64 years

9) The average age of the committee of 10 members is 40 years. A member of age 52 retires and a new member of age 38 takes his place. What is the average age of the present committee?

1. 38.6 years
2. 33.5 years
3. 35.5 years
4. 37.5 years

10) Four years ago, the average age of A and B was 20 years. If today average age of A, B and C is 25 years, what will be age of C after 7 years?

1. 32 years
2. 34 years
3. 36 years
4. 38 years