If 80 persons can finish a work within 16 days by working 6 hours a day, the number of hours a day, should 64 persons work to finish that very job within 15 days is :

If 80 persons can finish a work within 16 days by working 6 hours a da

1.	If 80 persons can finish a work within 16 days by working 6 hours a day, the number of hours a day, should 64 persons work to finish that very job within 15 days is :
A.	5 hrs.
B.	7 hrs.
C.	8 hrs.
D.	6 hrs.
Answer» D. 6 hrs.

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If 80 persons can finish a work within 16 days by working 6 hours a day, the number of hours a day, should 64 persons work to finish that very job within 15 days is :

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