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If p, q, r be three positive numbers suc...

If p, q, r be three positive numbers such that `p gt q gt r` when the smallest number is added to the difference of the rest two numbers, then the average of the resultant number and the original numbers except to the smallest is 21 more than the average of all the three numbers. The value of (p-q) is :

A

7

B

14

C

63

D

42

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The correct Answer is:
C
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