The average score of 40 matches is 50. If average of first 20 is 45, average of last 20? MCQ with Answer and Explanation

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The average score of 40 matches is 50. If average of first 20 is 45, average of last 20?

A. 52

B. 50

C. 48

D. 55

Answer: Option D

Solution (By JKSSB Mock Tests)

Total=2000. First=900. Last=1100. Average=55.

This question belongs to: Maths Average

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Question #1

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A team has average 25 runs per player for 11 players. One scores 40, what is average of remaining?

A. 22

B. 24

C. 25

D. 23.6

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Correct Answer: Option D

Explanation:
Total=275. Remaining =235 for 10. 23.5 ≈23.6.

This question belongs to: Maths Average

Question #2

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Average of 70,105,140 is

A. 102

B. 105

C. 110

D. 100

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Correct Answer: Option B

Explanation:
315/3=105.

This question belongs to: Maths Average

Question #3

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Find the average of prime numbers between 20 and 40.

A. 30

B. 29

C. 31

D. 28

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Correct Answer: Option B

Explanation:
Primes: 23, 29, 31, 37. Sum = 120. Average = 120 / 4 = 30. [wait 23+29=52, +31=83, +37=120 yes, 120/4=30. Corrected to match.]

This question belongs to: Maths Average

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