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. 13.5

B. 14

C. 15

D. 14.29

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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Average of 10 numbers 430. If average of 6 is 425, average of remaining 4?

A. 435

B. 437.5

C. 436

D. 440

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Correct Answer: Option B

Explanation:
Sum10=4300. Sum6=2550. Remaining=1750. Average=437.5.

This question belongs to: Maths Average

Question #2

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What is the average of the first 9 odd numbers?

A. 10

B. 8.5

C. 9.5

D. 9

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Correct Answer: Option D

Explanation:
Sum of first n odd numbers = n^2 =9^2=81. Average=81/9=9.

This question belongs to: Maths Average

Question #3

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Average of first 10 multiples of 9 is

A. 50

B. 49.5

C. 54.5

D. 45

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Correct Answer: Option B

Explanation:
9*(1+10)/2 =9*5.5=49.5.

This question belongs to: Maths Average

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