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The average of n numbers is x . When 36 ...

The average of n numbers is x . When 36 is subtracted from two of the numbers , the new average becomes (x-8) . The value of n is

A

6

B

8

C

9

D

72

Text Solution

Verified by Experts

The correct Answer is:
C
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S CHAND IIT JEE FOUNDATION-AVERAGE -QUESTION BANK -16
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  3. The average of a 6 observations is 45.5. If one new observation is ...

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  4. The average age of 3 friends is 23 .Even if the age of the 4th frie...

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  5. In a joint family , the average age of grandparents is 67 years , th...

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  6. For a week , the average daily rainfall was 0.25 cm. There was no r...

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  7. The average of n numbers is x . When 36 is subtracted from two of t...

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  8. Of the four numbers whose average is 60 , the first is (1)/(4) th ...

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  9. Four years ago the average age of A ,B and C was 25 years .Five yea...

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  10. Out of three numbers , the first is twice the second and is half of t...

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  11. The average marks in Mathematics for 5 students was found to be 50 . ...

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  12. If the arithmetic mean of seventy-five numbers is calculated, it is...

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  13. The average of 6 numbers is 30 . If the average of the first four i...

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  14. The average of 11 numbers is 32 .If the average of the first six nu...

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  15. The average marks obtained by 22 candidates in an examination are 45. ...

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  16. Out of 9 persons, 8 persons spent Rs 30 each for their meals. The n...

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  17. Average age of 6 sons of a family is 8 years. Average age of sons toge...

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  18. The average age of students of a class is 15.8 years. The average a...

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  19. The average expenditure of a man for the first five months of a yea...

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  20. The average monthly salary of the workers in a work shop is Rs . 8500...

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