The efficiency of work of P and Q are in the ratio 5:7. What will be the ratio of number of days taken by them to finish the work?

The efficiency of work of P and Q are in the ratio 5:7. What will be t

1.	The efficiency of work of P and Q are in the ratio 5:7. What will be the ratio of number of days taken by them to finish the work?
A.	0.29513888888889
B.	0.12777777777778
C.	0.16875
D.	0.21319444444444
Answer» B. 0.12777777777778

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The efficiency of work of P and Q are in the ratio 5:7. What will be the ratio of number of days taken by them to finish the work?

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