Average of 8 numbers 1100. If average of 5 is 1095, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 1100. If average of 5 is 1095, average of remaining 3?

A. 1105

B. 1110

C. 1108.33

D. 1107

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum8=8800. Sum5=5475. Remaining=3325. Average≈1108.33.

This question belongs to: Maths Average

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Question #1

Average of 20 numbers 70. If 5 numbers average 80, average of remaining 15?

A. 65

B. 68

C. 67

D. 66.67

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Correct Answer: Option D

Explanation:
Total=1400. 5=400. Remaining=1000/15≈66.67.

This question belongs to: Maths Average

Question #2

Average of 15 numbers is 40. Average of first 8 is 35. Average of last 8 is 45. Find the 8th number.

A. 42

B. 45

C. 35

D. 40

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Correct Answer: Option D

Explanation:
Sum15=600. Sum first8=280. Sum last8=360. 8th =280 +360 -600 =40.

This question belongs to: Maths Average

Question #3

If average of 8 and 12 is 10 and average of 12 and x is 15, x is

A. 20

B. 15

C. 18

D. 16

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Correct Answer: Option C

Explanation:
12 + x =30. x=18.

This question belongs to: Maths Average

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