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The average of 100 numbers is 63, but it...

The average of 100 numbers is 63, but it was found that 2 numbers 37 & 76 are mistakenly calculated as 73 & 67 respectively. Find his correct average if it was also found that total numbers are only 90.

A

70.3

B

62.7

C

63.3

D

69.7

Text Solution

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The correct Answer is:
D
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GAGAN PRATAP -AVERAGE-Multiple Choice Questions
  1. In a class, the average score of thirty students on a test is 69. Late...

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  2. The average marks of 40 students was found to be 68. If the marks of t...

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  3. The average of 100 numbers is 63, but it was found that 2 numbers 37 &...

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  4. The average age of a number of persons in a group’ was calculated as 3...

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  5. The average of the ages of a group of 65 men is 32 years. If 5 men...

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  6. The average of 18 numbers is 37.5. If six numbers of average x are add...

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  7. The average weight of some students in a class was 58.4kg. When 5 stud...

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  8. The average weight of the students in a group 75.4 kg. Later on, four ...

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  9. The average weight of a certain number of students in a group is 72 kg...

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  10. While tabulation of marks scored in an examination by the students of ...

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  11. The average of n observations is 40. If one observation of value 80 is...

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  12. The average age of 24 students is 15.5 years. The age of the teacher i...

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  13. Three numbers are such that if the average of any two of them is added...

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  14. The average of eleven numbers is 68. The average of the first four num...

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  15. The average of thirteen numbers is 80. The average of the first five n...

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  16. The average of 24 numbers is 56. The average of the first 10 numbers i...

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  17. The average marks of 30 boys is 88, and when the top scores were exclu...

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  18. A batsman scores 92 runs in his 15th innings, which increases his batt...

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  19. A batsman makes 100 runs in the 25th match of his career. His average ...

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  20. The average run of a batsman in his 23 matches is 62. He scores 122 in...

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