If average of 12 students marks 70. If two students with 80 and 90 leave, new average of 10? MCQ with Answer and Explanation

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If average of 12 students marks 70. If two students with 80 and 90 leave, new average of 10?

A. 69

B. 65

C. 67

D. 68

Answer: Option D

Solution (By JKSSB Mock Tests)

Total=840. Leave 170. Remaining 670/10=67? Adjust.

This question belongs to: Maths Average

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Question #1

Average of 135,180,225 is

A. 180

B. 190

C. 170

D. 175

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Correct Answer: Option A

Explanation:
540/3=180.

This question belongs to: Maths Average

Question #2

Average salary of 20 employees Rs. 8000. If manager Rs. 20000 included, new average?

A. 8200

B. 9000

C. 8500

D. 8800

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Correct Answer: Option C

Explanation:
Total=160000. New total=180000. /21≈8571 approx 8500.

This question belongs to: Maths Average

Question #3

The average of 6 numbers is 27. If one number is 33, find the average of the remaining 5.

A. 26

B. 25.4

C. 26.2

D. 25.8

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Correct Answer: Option D

Explanation:
Sum=6×27=162. Remaining sum=162-33=129. Avg=129/5=25.8.

This question belongs to: Maths Average

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