Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4?

A. 1678

B. 1675

C. 1680

D. 1682

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=20040. Sum8=13320. Remaining=6720. Average=1680.

This question belongs to: Maths Average

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Question #1

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The average of 4 numbers is 30. If the numbers are in the ratio 1:2:3:4, find the largest number.

A. 60

B. 36

C. 24

D. 48

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Correct Answer: Option D

Explanation:
Sum = 4×30=120. Ratio sum =1+2+3+4=10. Largest = (4/10)×120=48.

This question belongs to: Maths Average

Question #2

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Average of 615,820,1025 is

A. 815

B. 830

C. 810

D. 820

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Correct Answer: Option D

Explanation:
2460/3=820.

This question belongs to: Maths Average

Question #3

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Average of 435,580,725 is

A. 570

B. 580

C. 575

D. 590

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Correct Answer: Option B

Explanation:
1740/3=580.

This question belongs to: Maths Average

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