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The average of twelve numbers is 39. The...

The average of twelve numbers is 39. The average of the last five number is 35, and that of the first four numbers is 40, The fifth number is 6 less than the sixth number and 5 more than the seventh number . The average of the fifth and sixth number is :

A

44

B

47

C

50

D

39

Text Solution

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The correct Answer is:
B
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