## AVERAGE PRACTISE SET PROBLEMS

PRACTISE SET PROBLEMS

### LEVEL 1:

1. Find the average of 100,121,144,169,196,……………………………….,400.

1. 225                2. 235                      3.  230                           4. 240 2. What is the average of first 16 multiples of 14 ?

1. 115                   2. 120                       3. 116                            4. 119 3. Find the average of all the numbers between 23 and 177 which are divisible by 5.

1. 90                     2. 100                       3. 95                              4. 105 4. what is the average of 13,23,33,……………………………………….,403 ?

1. 16000                   2. 15810                            3. 16781                  4. 16810 5. The average of 13 consecutive odd numbers is 25. What is the smallest odd number?

1. 10                           2. 12                    3. 13                        4. 11

6. What is the average of all even numbers between 100 and 1000 ?

1. 500                         2. 550                       3. 600                 4. 650

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7. The average of 31 numbers is 27. If three numbers 31,25 and 46 are discarded, the average of the remaining numbers is

1. 25.5                     2. 24.5                        3. 26.25                      4. 26

8. The average of the 30 numbers is 22. The average of the first 14 number is 30. The average of the rest is

1. 12                        2. 15                           3. 11                          4. 13

9. The average of the first 102 multiples of 2 is

1. 100                         2. 101                      3. 102                       4. 103

10. The average of 12 numbers is 17. But a number 18 is misread as 12. Find the correct average

1. 16.5                         2. 17                       3. 17.5                       4. 16

11. The average of 13 numbers is 23. If two numbers are excluded, the average becomes 22. The average of the excluded numbers is

1. 28                            2. 28.5                      3. 29                         4. 30

12. The average of the numbers 4,42,43and 44 is

1. 43                         2. 85                      3. 51                  4. 26

13. The average of 37 numbers is 56. The average of first 18 numbers is 53 and the average of last 18 numbers is 58. Find the 19th number

1. 44                                  2. 54                            3. 64                                   4. 74

14. Find the average of the numbers 11,22,33,44,……………..1111

1. 500                                  2. 561                           3. 582                       4 .523

15. The average of 11 numbers is 11. The average of first six numbers is 10 and the average of last 6 numbers is Find the 6th number

1. 23                                2. 20                                    3. 25                                4. 26

16. The average age of four boys is 12. If their ages are in the ratio 2:3:4:7. What is the age of the youngest boy?

1. 5                             2. 8                      3. 6                       4. 4

17. Find the average of first 50 multiples of 32

1. 820                         2. 56                    3. 326                    4. 816

18. The average of 13 numbers is 15. If every number is multiplied by 9, then the average of new numbers

1. 15                           2. 24                      3. 135                   4. 120

19. Find the average of all the numbers between 65 and 359, which are divisible by 33 ?

1. 198                      2. 165.5                     3. 129                               4. 181.5

20. The average of the numbers 18,20,22,24,……………………………256

1. 156                   2. 137                      3. 154                         4. 126

21. Find the average of odd numbers upto 999

1. 400                  2. 600                        3. 500                    4. 700

22. The average of the following numbers 2,2,2,2,2,2,2,6,6,6,6,6,6,6,10,10,10,10,10,10,10,14,14,14,14,14,14,14,18,18,18,18,18,18,18,22,22,22,22,22,22,22,26,26,26,26,26,26,26,30,30,30,30,30,30,30

1. 14                  2. 12                     3. 16                    4. 18

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### LEVEL 2

1. The average of 11 numbers is 36, and average of first 9 numbers is 34. If last  two numbers are in the ratio   2 : 3 then find the smallest number in the last two.

1. 18                        2. 36                         3. 54                            4. 60

2. The average age of A,B and C is 23. Four years after the average age of A and B will be 29. What was  the age of C, 3 years before the present age ?

1. 16                        2. 17                       3. 18                          4. 19

3. The average marks of 120 students is 50. If the average marks of passing students is 70 and the average marks of failure students is 22. What is the number of failure students ?

1. 50                        2. 45                     3. 60                       4. 55

4. The average age of 18 men decreases by 1 when two men of age 38 and 44 are replaced by two women. Find the average age of two women.

1. 32                  2. 34                      3. 35                    4. 30

5. The average age of a school of 35 teachers is 32. If the age of the principal be included then the average increases by 4 months. Find the age of principal.

1. 44                      2. 47                   3. 45                 4. 42

6. The total age of A,B and C is 70 more than the age of C. what is the average age of A and B ?

1. 30                 2. 33                3. 36                   4. 35

7. If the average of A,B and C is 50, average of B and C is 70, average of  A and C is 65.What is the average of A and B ?

1. 10                  2. 60                      3. 55                 4. 15

8. The average score of a school in an examination is 75. If the average score of boys is 69, and the ratio of the numbers of boys to the girls is 5 : 3 . what is the average score of girls ?

1. 85                 2. 80                 3. 81                  4. 78

9.The average age of some students in a class is 8. If their class teacher is included whose age is 40, the average age of whole class increases by 2. What are the number of students in a class ?

1. 20                2. 10                       3. 12                   4. 15

10. The average marks obtained by a student in 7 papers is 35 and in the 8th paper he obtains  75 marks. Find his new average.

1. 37                   2. 40                 3. 39                 4. 42

11. The average marks of 150 students in a school is 43. The average marks of boys and girls are 41 and 46 respectively. The number of boys in a  school is

1. 90                      2. 60                        3. 30                         4. 120

12. In a class the average score of all students is 32. If the average score of boys and girls are 31 and 35. Find the percentage of girls

1. 25%                              2. 20%                      3. 30%                   4. 33.33%

13. The average age of 10 players of a team is 24. If the captain’s age is included, the average age increases by 1. The age of the captain is

1. 30                      2. 32                    3. 35                    4. 36

14. The average weight of a class of 14 students is 33kg . If their class teacher be included whose weight is 78 kg ,then find the new average weight of class

1. 34                       2. 35                       3. 32                     4. 36

15. he average of A and B is 36,average of  B and C is 24 and average of C and A is. Find the average of A,B and C

1. 30                  2. 35                    3. 36                         4. 38

AVERAGE PRACTISE SET PROBLEMS ANSWER KEYS

### LEVEL 1 :

 1. b 2. d 3. b 4. d 5. c 6. b 7. c 8. b 9. d 10. c 11. b 12. b 13. d 14. b 15. a 16. c 17. d 18. c 19. a 20. b 21. c 22. c

LEVEL 2 :

 1.b 2. a 3. a 4. a 5. a 6. d 7. d 8. a 9. d 10. b 11. a 12. a 13. c 14. d 15. d

AVERAGE PRACTISE SET PROBLEMS LEVEL 3