The average marks in English for 30 students 55. If 10 students average 65, average of remaining? MCQ with Answer and Explanation

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

A. 55

B. 52

C. 50

D. 48

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers 890. If average of 6 is 885, average of remaining 3?

A. 905

B. 900

C. 898

D. 895

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Correct Answer: Option B

Explanation:
Sum9=8010. Sum6=5310. Remaining=2700. Average=900.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 460. If average of 9 is 455, average of remaining 6?

A. 465

B. 467.5

C. 470

D. 468

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Correct Answer: Option B

Explanation:
Sum15=6900. Sum9=4095. Remaining=2805. Average=467.5.

This question belongs to: Maths Average

Question #3

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The average of 5 numbers is 30. If each number is multiplied by 1.2, what is the new average?

A. 36

B. 42

C. 30

D. 24

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Correct Answer: Option A

Explanation:
New average =30×1.2=36.

This question belongs to: Maths Average

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