Average of 9 numbers 290. If average of 6 is 285, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 290. If average of 6 is 285, average of remaining 3?

A. 298

B. 300

C. 295

D. 305

Answer: Option B

Solution (By JKExamLibrary)

Sum9=2610. Sum6=1710. Remaining=900. Average=300.

This question belongs to: Maths Average

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Question #1

The average of three numbers is 45. If two numbers are 40 and 50, the third number is:

A. 45

B. 50

C. 40

D. 55

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Correct Answer: Option A

Explanation:
Total of three numbers = 3×45 = 135. Third number = 135−40−50 = 45.

This question belongs to: Maths Average

Question #2

If the average of 5 numbers is 60 and the average of first two is 55, average of last two is 65, then the middle number is

A. 55

B. 70

C. 60

D. 65

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Correct Answer: Option C

Explanation:
Sum5=300. Sum first2=110. Sum last2=130. Middle=300-240=60.

This question belongs to: Maths Average

Question #3

Average of 7 consecutive odd numbers is 35. Largest number?

A. 37

B. 39

C. 43

D. 41

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Correct Answer: Option D

Explanation:
Middle=35. Largest=35+6=41.

This question belongs to: Maths Average

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