Average MCQs

Maths

Average MCQs

Practice Average MCQs with answers and detailed explanations. Learn basic average concepts, average age, marks, salary, speed, combined average, weighted average and advanced aptitude questions designed for SSC, Railway, Banking, UPSC, JKSSB, Police, Teaching and other competitive exams.

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Total Questions

Practice Questions

Page 23 of 49
Question #441
Average of 9,18,27,36,45 is
A. 30
B. 28
C. 25
D. 27
Discuss
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Correct Answer: Option D

Explanation:
Sum=135. Average=27.
This question belongs to: Maths Average
Question #442
If average of 7 numbers is 24 and average of 4 is 22, average of remaining 3?
A. 28
B. 27
C. 26
D. 25
Discuss
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Correct Answer: Option B

Explanation:
Sum7=168. Sum4=88. Remaining=80. Average≈26.67 approx 27.
This question belongs to: Maths Average
Question #443
The average of 1 to 30 is
A. 15
B. 16
C. 14.5
D. 15.5
Discuss
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Correct Answer: Option D

Explanation:
(30+1)/2=15.5.
This question belongs to: Maths Average
Question #444
Average of 12,24,36,48,60 is
A. 30
B. 36
C. 42
D. 40
Discuss
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Correct Answer: Option B

Explanation:
Sum=180. Average=36.
This question belongs to: Maths Average
Question #445
Average of 20 numbers 50. If each number is doubled, new average?
A. 25
B. 50
C. 75
D. 100
Discuss
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Correct Answer: Option D

Explanation:
New average =100.
This question belongs to: Maths Average
Question #446
The average of 5 numbers is 18. If 3 numbers average 15, average of remaining 2?
A. 21
B. 22.5
C. 25
D. 20
Discuss
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Correct Answer: Option B

Explanation:
Sum5=90. Sum3=45. Remaining=45. Average=22.5.
This question belongs to: Maths Average
Question #447
Average of multiples of 8 from 8 to 64 is
A. 32
B. 36
C. 40
D. 30
Discuss
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Correct Answer: Option B

Explanation:
(8+64)/2=36.
This question belongs to: Maths Average
Question #448
Average of 40 numbers 30. If 10 numbers average 40, average of remaining 30?
A. 25
B. 27
C. 26.67
D. 28
Discuss
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Correct Answer: Option C

Explanation:
Total=1200. 10=400. Remaining=800/30≈26.67.
This question belongs to: Maths Average
Question #449
The average of 33,44,55 is
A. 44
B. 46
C. 45
D. 42
Discuss
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Correct Answer: Option A

Explanation:
Sum=132. Average=44.
This question belongs to: Maths Average
Question #450
Average of 8 numbers 22. If 4 numbers average 20, other 4 average?
A. 23
B. 24
C. 22
D. 26
Discuss
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Correct Answer: Option B

Explanation:
Sum8=176. Sum4=80. Other=96. Average=24.
This question belongs to: Maths Average
Question #451
The average of first 10 prime numbers is
A. 13
B. 12
C. 12.9
D. 15
Discuss
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Correct Answer: Option C

Explanation:
Sum=129. Average=12.9.
This question belongs to: Maths Average
Question #452
Average of 25 numbers 42. If one number 60 replaced by 30, new average?
A. 41
B. 40
C. 42
D. 43
Discuss
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Correct Answer: Option A

Explanation:
Change -30, decrease 1.2, new 40.8 approx 41.
This question belongs to: Maths Average
Question #453
Average of 6,12,18,24,30,36,42 is
A. 22
B. 24
C. 25
D. 26
Discuss
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Correct Answer: Option B

Explanation:
Sum=168. Average=24.
This question belongs to: Maths Average
Question #454
If average of 15 numbers is 50 and average of 5 is 55, average of remaining 10?
A. 45
B. 50
C. 48
D. 47.5
Discuss
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Correct Answer: Option D

Explanation:
Sum15=750. Sum5=275. Remaining=475. Average=47.5.
This question belongs to: Maths Average
Question #455
The average of 50,60,70,80 is
A. 65
B. 60
C. 70
D. 75
Discuss
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Correct Answer: Option A

Explanation:
Sum=260. Average=65.
This question belongs to: Maths Average
Question #456
Average of 10 consecutive numbers is 55.5. Largest number?
A. 60
B. 59
C. 61
D. 62
Discuss
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Correct Answer: Option A

Explanation:
Largest =55.5 +4.5=60.
This question belongs to: Maths Average
Question #457
The average of 9 numbers is 35. If average of first 4 is 32, average of last 6 is 37, the 4th number?
A. 34
B. 33
C. 36
D. 35
Discuss
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Correct Answer: Option B

Explanation:
Sum9=315. Sum1-4=128. Sum4-9=222. 4th=128+222-315=35.
This question belongs to: Maths Average
Question #458
Average of all odd numbers from 1 to 49 is
A. 26
B. 25
C. 24
D. 23
Discuss
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Correct Answer: Option B

Explanation:
25 numbers. Average 25.
This question belongs to: Maths Average
Question #459
Average of 20 numbers 40. If each decreased by 5, new average?
A. 35
B. 40
C. 45
D. 30
Discuss
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Correct Answer: Option A

Explanation:
New average=35.
This question belongs to: Maths Average
Question #460
The average of 15,25,35,45,55 is
A. 36
B. 30
C. 40
D. 35
Discuss
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Correct Answer: Option D

Explanation:
Sum=175. Average=35.
This question belongs to: Maths Average

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