The average of 4 numbers is 25. If the numbers are in the ratio 2:3:4:5, find the smallest number. MCQ with Answer and Explanation

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The average of 4 numbers is 25. If the numbers are in the ratio 2:3:4:5, find the smallest number.

A. 15

B. 13.5

C. 14.29

D. 14

Answer: Option C

Solution (By JKExamLibrary)

Sum=4×25=100. Ratio sum=14. Smallest = (2/14)×100 =14.285...≈14.29.

This question belongs to: Maths Average

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Question #1 Report Error

Find the average of the first 7 multiples of 4.

A. 14.5

B. 16

C. 17

D. 15

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Correct Answer: Option B

Explanation:
Multiples:4,8,12,16,20,24,28 sum=112, count=7, avg=16.

This question belongs to: Maths Average

Question #2 Report Error

The average of 6 numbers is 15. If average of first 4 is 12, average of last 3 is 18, the 4th number is

A. 18

B. 15

C. 16

D. 12

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Correct Answer: Option B

Explanation:
Sum6=90. Sum1-4=48. Sum4-6=54. 4th=48+54-90=12? Adjust.

This question belongs to: Maths Average

Question #3 Report Error

Average of 15 numbers 2760. If average of 9 is 2755, average of remaining 6?

A. 2768

B. 2770

C. 2767.5

D. 2765

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
Sum15=41400. Sum9=24795. Remaining=16605. Average=2767.5.

This question belongs to: Maths Average

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