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The average of 18 numbers is 37.5. If si...

The average of 18 numbers is 37.5. If six numbers of average x are added to them,then the average of all the numbers increases by one. The value of x is

A

42

B

40

C

38.5

D

41.5

Text Solution

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The correct Answer is:
D
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GAGAN PRATAP -AVERAGE-Multiple Choice Questions
  1. The average age of a number of persons in a group’ was calculated as 3...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. A cricket batsman had certain average of runs in his 91 innings. In th...

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  19. A cricketer had a certain average of runs for his 64 innings. In his 6...

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  20. A batsman scores certain runs in 72 innings. In next two innings he sc...

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