Question

25 abeurers can finish a piece of work in 20 days
then 20 laboures will do the same work in

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Answer 1

Question:

If 25 labourers, working 6 hours a day, can finish a piece of work in 12 days, how many labourers, working 5 hours a day, can finish it in 30 days ?

Answer:

12 labourers

Step-by-step explanation:

So 25 laborers will take 12*6 = 72 hours to finish the piece of work,

where as X laborers will take 30*5 = 150 hours to finish the same piece of work.

∴ if we take ratios:

25:X = 1/(72:150) or 25:X = 150:72

or X = 25*72/150 = 12 laborers.