If the ratio of speed of doing work of three persons is 1 : 3 : 5, what is the ratio of time taken by these people to do the same amount of work?

If the ratio of speed of doing work of three persons is 1 : 3 : 5, wha

1.	If the ratio of speed of doing work of three persons is 1 : 3 : 5, what is the ratio of time taken by these people to do the same amount of work?
A.	15 : 5 : 7
B.	3 : 15 : 5
C.	15 : 3 : 5
D.	15 : 5 : 3
E.	None of these
Answer» E. None of these

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If the ratio of speed of doing work of three persons is 1 : 3 : 5, what is the ratio of time taken by these people to do the same amount of work?

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