M is thrice as good as workman as N and together they finish a piece of work in 30 days. In how many days will M alone finish the work?

M is thrice as good as workman as N and together they finish a piece o

1.	M is thrice as good as workman as N and together they finish a piece of work in 30 days. In how many days will M alone finish the work?
A.	50
B.	40
C.	60
D.	45
Answer» C. 60

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M is thrice as good as workman as N and together they finish a piece of work in 30 days. In how many days will M alone finish the work?

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