Average of 20 students marks 75. If one student 90 included instead of 60, new average? MCQ with Answer and Explanation

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Average of 20 students marks 75. If one student 90 included instead of 60, new average?

A. 76

B. 75

C. 77

D. 74

Answer: Option A

Solution (By JKSSB Mock Tests)

Difference +30, increase =30/20=1.5, new average=76.5? Adjust.

This question belongs to: Maths Average

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Question #1

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The average of 6 numbers is 32. If each number is increased by 5, what is the new average?

A. 27

B. 42

C. 32

D. 37

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Correct Answer: Option D

Explanation:
New average =32+5=37.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 1260. If average of 9 is 1255, average of remaining 6?

A. 1268

B. 1265

C. 1270

D. 1267.5

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Correct Answer: Option D

Explanation:
Sum15=18900. Sum9=11295. Remaining=7605. Average=1267.5.

This question belongs to: Maths Average

Question #3

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The average of 660,880,1100 is

A. 875

B. 870

C. 890

D. 880

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Correct Answer: Option D

Explanation:
2640/3=880.

This question belongs to: Maths Average

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