The average of 3 numbers is 9. If the numbers are in the ratio 2:3:4, find the smallest. MCQ with Answer and Explanation

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The average of 3 numbers is 9. If the numbers are in the ratio 2:3:4, find the smallest.

A. 6

B. 8

C. 7

D. 5

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum=3×9=27. Ratio sum=2+3+4=9. Smallest = (2/9)×27=6.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 2670. If average of 8 is 2665, average of remaining 4?

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C. 2682

D. 2680

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Correct Answer: Option D

Explanation:
Sum12=32040. Sum8=21320. Remaining=10720. Average=2680.

This question belongs to: Maths Average

Question #2

Average of 1,3,5,...,19 (odd numbers).

A. 11

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Correct Answer: Option B

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10 terms, average 10.

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Question #3

The average marks in English for 30 students 55. If 10 students average 65, average of remaining?

A. 48

B. 50

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Correct Answer: Option B

Explanation:
Total=1650. 10 students=650. Remaining=1000 for 20. 50.

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