Lavish is thrice as good a workman as Mukesh and takes 10 days less to do a piece of work than Mukesh takes. Mukesh alone can do the whole work in
Ratio of times taken by Lavish and Mukesh = 1:3.
If difference of time is 2 days, Mukesh takes 3 days.
If difference of time is 10 days,
Mukesh takes (3/2) * 10 =15 days.
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