The average of 25 results is 18, that of first twelve is 14 and of last twelve is 17 . Thirteenth result is?

The average of 25 results is 18, that of first twelve is 14 and of las

1.	The average of 25 results is 18, that of first twelve is 14 and of last twelve is 17 . Thirteenth result is?
A.	28
B.	72
C.	78
D.	85
Answer» D. 85

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The average of 25 results is 18, that of first twelve is 14 and of last twelve is 17 . Thirteenth result is?

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