Average of 12 numbers 160. If average of 8 is 155, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 160. If average of 8 is 155, average of remaining 4?

A. 172

B. 168

C. 170

D. 165

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=1920. Sum8=1240. Remaining=680. Average=170.

This question belongs to: Maths Average

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Question #1

The average of 4 numbers is 18. If one number is 22, find the average of the remaining 3.

A. 17.33

B. 16

C. 16.67

D. 17

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Correct Answer: Option C

Explanation:
Sum=4×18=72. Remaining sum=72-22=50. Avg=50/3=16.67.

This question belongs to: Maths Average

Question #2

Average of 8 numbers 1450. If average of 5 is 1445, average of remaining 3?

A. 1460

B. 1457

C. 1458.33

D. 1455

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Correct Answer: Option C

Explanation:
Sum8=11600. Sum5=7225. Remaining=4375. Average≈1458.33.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 21. If one number is 15, find the average of the remaining 5.

A. 22.2

B. 21.4

C. 21.6

D. 22

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Correct Answer: Option A

Explanation:
Sum=6×21=126. Remaining sum=126-15=111. Avg=111/5=22.2.

This question belongs to: Maths Average

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