Average salary of 20 employees Rs. 8000. If manager Rs. 20000 included, new average? MCQ with Answer and Explanation

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

A. 8800

B. 8500

C. 8200

D. 9000

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

Average of 35,70,105 is

A. 80

B. 65

C. 70

D. 60

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Correct Answer: Option C

Explanation:
210/3=70.

This question belongs to: Maths Average

Question #2

The average of 100 numbers is 50. The number 100 was misread as 10. Correct average?

A. 50.9

B. 50

C. 51

D. 49

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Correct Answer: Option A

Explanation:
Error -90. Increase 90/100=0.9. New=50.9.

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Question #3

If average of a and b is 10, b and c is 15, c and a is 20, average of a,b,c is

A. 13

B. 16

C. 14

D. 15

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Correct Answer: Option D

Explanation:
Adding all: 2(a+b+c)=90, a+b+c=45. Average=15.

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