Average of 40 students is 50. If average of 10 is 60, average of remaining 30? MCQ with Answer and Explanation

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Average of 40 students is 50. If average of 10 is 60, average of remaining 30?

A. 45

B. 48

C. 46.67

D. 47

Answer: Option C

Solution (By JKSSB Mock Tests)

Total=2000. 10=600. Remaining=1400. 1400/30≈46.67.

This question belongs to: Maths Average

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Question #1

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

A. 51.67

B. 53

C. 50

D. 52

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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 #2

Average of 9 numbers 640. If average of 6 is 635, average of remaining 3?

A. 648

B. 650

C. 645

D. 655

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Correct Answer: Option B

Explanation:
Sum9=5760. Sum6=3810. Remaining=1950. Average=650.

This question belongs to: Maths Average

Question #3

Average of 7 consecutive odd numbers is 35. Largest number?

A. 43

B. 37

C. 39

D. 41

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Correct Answer: Option D

Explanation:
Middle=35. Largest=35+6=41.

This question belongs to: Maths Average

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