Question 77
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?
Solution
Let N's efficiency = 1unit/day
M's efficiency would be = 3units/day
In 1 day they can do 4units of work
In 30days then can do 30*4=120units of work
M alone finish the work in 120/3 days = 40days
So the answer is option B.
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