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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 :
18 संख्याओं का औसत 37.5 है | यदि औसत x वाली छः संख्याओं को उनमें जोड़ा जाए, तो इन सभी संख्याओं का औसत एक से बढ़ जाता है | x का मान है :

A

40

B

41.5

C

42

D

38.5

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