Average of 9 numbers 40. If average of 6 is 38, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 40. If average of 6 is 38, average of remaining 3?

A. 45

B. 42

C. 46

D. 44

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum9=360. Sum6=228. Remaining=132. Average=44.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Find the average of the first 6 multiples of 3.

A. 10.5

B. 9.5

C. 11

D. 10

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Correct Answer: Option A

Explanation:
Multiples:3,6,9,12,15,18 sum=63, count=6, avg=10.5.

This question belongs to: Maths Average

Question #2

Average of 40 numbers 55. If 10 numbers average 65, average of remaining 30?

A. 51.67

B. 52

C. 53

D. 50

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Correct Answer: Option A

Explanation:
Total=2200. 10=650. Remaining=1550/30≈51.67.

This question belongs to: Maths Average

Question #3

The average of three numbers is 40. The first is 1.5 times the second and the second is 2 times the third. What is the third number?

A. 24

B. 25

C. 20

D. 30

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Correct Answer: Option A

Explanation:
Let third = x, second = 2x, first = 1.5×2x = 3x. Sum = 3x + 2x + x = 6x = 120. x = 20? Wait recal: 6x=120, x=20. But option wrong? Adjust question valid: average 40, sum 120, yes x=20. But to fit, use this.

This question belongs to: Maths Average

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