B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

B is thrice as efficient as A and C is 0.75 times as efficient as A. W

1.	B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?
A.	0.16739583333333
B.	0.12574074074074
C.	0.085428240740741
D.	0.20905092592593
Answer» C. 0.085428240740741

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B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

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