Average of 10 numbers 15. If each multiplied by 3, new average? MCQ with Answer and Explanation

Average of 10 numbers 15. If each multiplied by 3, new average?

A. 30

B. 15

C. 5

D. 45

Answer: Option D

Multiplied by 3, average 45.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 80,90,100 is

A. 88

B. 95

C. 85

D. 90

Correct Answer: Option D

Explanation:
270/3=90.

This question belongs to: Maths Average

Question #2 Report Error

Average of 15 numbers 1860. If average of 9 is 1855, average of remaining 6?

A. 1870

B. 1867.5

C. 1865

D. 1868

Correct Answer: Option B

Explanation:
Sum15=27900. Sum9=16695. Remaining=11205. Average=1867.5.

This question belongs to: Maths Average

Question #3 Report Error

The average of 35,42,49,56 is

A. 46

B. 44

C. 45.5

D. 47

Correct Answer: Option C

Explanation:
Sum=182. Average=45.5.

This question belongs to: Maths Average