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A boy found that the average of 20 numbe...

A boy found that the average of 20 numbers is 35 when he writes a number '61' instead of '16'. The correct average of 20 numbers is:

A

32.75

B

36.25

C

34.75

D

34.25

Text Solution

Verified by Experts

The correct Answer is:
A
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KIRAN PUBLICATION-AVERAGE-TYPE-V
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  5. A student finds the average of ten 2-digit numbers. While copying numb...

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  6. The average marks obtained by a student in 6 subjects is 88. On subseq...

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  7. Average marks of 100 students of a class is 58. Later it was found tha...

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  8. Average price of f 100 articles is 46. Later it was found that 16 was ...

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  9. In an exam, the average marks obtained by the students was found to be...

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  10. The average marks of 40 students in an examination was 25. It was late...

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  11. The average weight of 20 students in a class is increased by 0.75 kg w...

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  12. There are 50 students in a class. One of them weighing 50 kg goes away...

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  13. The average weight of 12 crewmen in a boat is increased by 1/3 kg, wh...

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

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  15. The mean of 20 items is 55. If two items 45 and 30 are removed, the ne...

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  16. The average marks obtained by 40 students of a class is 86. If the 5 h...

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  17. The average marks of 50 students in an examination was 65. It was late...

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  18. The average of 50 results was calculated as 30 but later it was found ...

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  19. The average of 45 results was calculated as 27 but later it was found ...

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  20. In class IX. the average marks of 6 students In science were 48. After...

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