Average of 8 numbers 55. If average of 5 is 50, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 55. If average of 5 is 50, average of remaining 3?

A. 63.33

B. 65

C. 60

D. 62

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum8=440. Sum5=250. Remaining=190. Average≈63.33.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers is 40. If average of first 7 is 38, what is average of last 5?

A. 40

B. 43

C. 42

D. 44

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Correct Answer: Option B

Explanation:
Sum12=480. Sum first7=266. Sum last5=214. Average last5=42.8 ≈ but use exact numbers.

This question belongs to: Maths Average

Question #2

The average of 8,16,24,32 is

A. 20

B. 18

C. 22

D. 24

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Correct Answer: Option A

Explanation:
Sum=80. Average=20.

This question belongs to: Maths Average

Question #3

If the average of 7 numbers is 35 and the average of first 4 is 32, average of last 4 is 38. What is the 4th number?

A. 28

B. 30

C. 32

D. 35

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Correct Answer: Option D

Explanation:
Sum of 7 = 7×35=245. Sum first 4=4×32=128. Sum last 4=4×38=152. 4th number = 128 + 152 - 245 = 35.

This question belongs to: Maths Average

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