Average MCQs

Question 1

The average of the numbers 7, 0, 6, 14 is:

Accepted Answer

7.8

Answer

39

Answer

9.75

Answer

None of these

Question 2

If the average of the numbers 5, 32, 25, 16, x & 40 is 21, then value of x is:

Accepted Answer

c

Answer

12

Answer

11

Question 3

The average of first 9 prime numbers is:

Accepted Answer

11/9

Answer

1

Answer

11

Answer

11/2

Question 4

The average of first 50 natural numbers is:

Accepted Answer

25.5

Answer

12.25

Answer

21.25

Answer

25

Question 5

If a, b, c, d, e are 5 consecutive odd numbers, then their average is:

Accepted Answer

None of the above

Answer

abcde

Answer

5

Answer

5

Question 6

If 16a + 16b = 48, what is average of a and b?

Accepted Answer

1.5

Answer

2.5

Question 7

The average of 5 consecutive natural numbers is m. If the next 3 consecutive natural numbers are included, then how much does the average of these 8 natural numbers exceed m?

Accepted Answer

a

Answer

1.4

Answer

1.5

Question 8

Out of three given numbers, the second is twice the first and thrice the third. If the average of these numbers is 44, then the largest number is:

Accepted Answer

72

Answer

24

Answer

36

Answer

108

Question 9

The average of ten numbers is 7. If each number is multiplied by 12 then the average of new set of numbers will be:

Accepted Answer

84

Answer

19

Answer

82

Question 10

Out of three numbers, the first is twice the second and half of the third. If the average of these numbers is 56, the smallest of these number is:

Accepted Answer

18

Answer

12

Answer

36

Question 11

The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is:

Accepted Answer

37.52

Answer

36.5

Answer

37

Answer

37.5

Question 12

If average of 6 numbers is 30. If the average of first four of these numbers is 25 and the average of last three of these numbers is 35, what is the 4th number?

Accepted Answer

35

Answer

25

Answer

30

Answer

40

Question 13

The average of 8 numbers is 38.4. Out of these numbers, the average of 7 numbers is 39.2. The number is:

Accepted Answer

c

Answer

37.3

Answer

32.8

Answer

None of the above

Question 14

The average of four positive integers is 72.5. If the largest of these numbers is 117 and smallest is 15 and difference between the remaining two is 12, the larger of these two is:

Accepted Answer

70

Answer

73

Answer

85

Answer

Cannot be determined

Question 15

The average of two numbers is 6.5 and the square root of their product is 6. The numbers are:

Accepted Answer

11,2

Answer

10,3

Question 16

The average of 5 consecutive natural numbers is n. If next two natural numbers are also considered, then the average of all the seven numbers is:

Accepted Answer

Increased by 1

Answer

Increased by 2

Answer

Increased by 14

Answer

None

Question 17

The sum of five numbers is 555. The average of the first two is 75 and the third number is 115. What is the average of last two numbers?

Accepted Answer

265

Answer

290

Answer

150

Answer

145

Question 18

The average of Y1, Y2, Y3 is 16. Half the sum of Y1 and Y3 is 23. What is the value of Y2?

Accepted Answer

18

Answer

20

Answer

19

Answer

17

Question 19

The average of two numbers is xy. If one number is x, then the other number is:

Accepted Answer

d

Answer

2xy - x

Answer

(2xy - x)

Question 20

A man covered a certain distance by car. He covered 30% of the distance at 20 km/hr, 60% of the distance at 40 km/hr and remaining distance at 10 km/hr. His average speed for the whole journey is:

Accepted Answer

30 km/hr

Answer

25 km/hr

Answer

28 km/hr

Answer

33 km/hr

Question 21

The average age of A and B is 29 years; that of B & C is 36 years and that of C & A is 35 years. What is the age of C?

Accepted Answer

36 years

Answer

38 years

Answer

30 years

Answer

42 years

Question 22

In a class, the average age of 32 boys is 14 years and average age of 26 girls is 12 years. What is the average age of whole class?

Accepted Answer

12.9 years

Answer

13.1 years

Answer

13.5 years

Answer

13.7 years

Question 23

The average age of 40 students of a class is 18 years. After the admission of 20 new students, the average age of all students of the class increases by 6 months. What is the average age of new students?

Accepted Answer

None of the above

Answer

19 years

Answer

19.5 years

Answer

20 years

Question 24

In a class of 20 students, average age is 15.6 years. Five new students join and their average age is 15.4 years. The average age of the class:

Accepted Answer

Decreased by 0.4 year

Answer

Decreased by 0.04 year

Answer

Increased by 0.04 year

Answer

Increased by 0.3 year

Question 25

The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases by 1 year. The age of the teacher is:

Accepted Answer

39 years

Answer

38 years

Answer

40 years

Answer

41 years

Question 26

If the total monthly income of 16 persons is Rs. 80800 and the income of one of them is 120% of the average income, then his income is:

Accepted Answer

5050

Answer

6060

Answer

6160

Answer

6600

Question 27

When the average age of a husband, wife and their son was 42 years, the son got married and a child was born just 1 year after their marriage. When the child turned 5 years, the average age of the family became 36 years. What was the age of daughter-in-law at time of marriage?

Accepted Answer

25 years

Answer

26 years

Answer

24 years

Answer

23 years

Question 28

10 years ago, the average age of a family of 4 members was 24 years. Two children having been born, the average age of the family is same today. What is the age of the youngest child, if they differ in age by 2 years?

Accepted Answer

4 years

Answer

2 years

Answer

6 years

Answer

8 years

Question 29

In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. A student attempts all the 100 questions and scores 210 marks. The number of questions he answered correctly was:

Accepted Answer

68

Answer

70

Answer

64

Answer

62

Question 30

A group consists of 25 men and 20 women. The average weight of a man is 48 kg and that of a woman is 30 kg. The average weight of the group is:

Accepted Answer

40 kg

Answer

35 kg

Answer

39 kg

Answer

45 kg

Question 31

The average temperature of Monday, Tuesday, Wednesday & Thursday was 38°C and that of Tuesday, Wednesday, Thursday and Friday was 40°C. If the temperature on Monday was 30°C, what was the temperature on Friday?

Accepted Answer

30°C

Answer

40°C

Answer

39°C

Answer

38°C

Question 32

The average temperature of first four days of a week is 38.6°C and that of the last four days is 40.3°C. If the average temperature of the week is 39.1°C, what was the temperature on Thursday?

Accepted Answer

39.8°C

Answer

36.7°C

Answer

38.6°C

Answer

41.9°C

Question 33

A cricket player had some average for his runs made in 64 innings. In 65th inning he could not make any score and he is out. Thus, his average decreases by 2 runs. What is his new average?

Accepted Answer

70 runs

Answer

130 runs

Answer

128 runs

Answer

68 runs

Question 34

A man whose bowling average is 12.4 takes 5 wickets for 26 runs and thereby decreases his average by 0.4. The number of wickets taken by him before his last match is:

Answer

85

Answer

78

Answer

72

Answer

64

Question 35

A batsman makes a score of 98 runs in the 19th inning and thus increases his average by 4. What is his average after 19th inning?

Accepted Answer

26

Answer

22

Answer

24

Answer

28

6Average

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