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The average marks of 40 students was fou...

The average marks of 40 students was found to be 68. If the marks of two students were incorrectly entered as 48 and 64 instead of 84 and 46 respectively, then what is the correct average?
40 छात्रों के औसत अंक 68 पाए गए | यदि दो छात्रों के अंक भूलवश 84 एवं 46 के बजाय क्रमशः 48 और 64 के रूप में शामिल किये गए हैं, तो सही औसत ज्ञात करें |

A

68.15

B

68.25

C

68.35

D

68.45

Text Solution

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The correct Answer is:
D
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GAGAN PRATAP -AVERAGE-Multiple Choice Questions
  1. The average marks of 50 students in an examination was 65. It was late...

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  2. In a class, the average score of thirty students on a test is 69. Late...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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