If 39 men can dig a canal in 15 days, in how many days can 45 men dig a canal whose length is double this canal?

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Solution

total working days for one man only =3915=585
total working days for canal of double length=2585=1170
so for 45 men=1170/45=26

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If 39 men can dig a canal in 15 days, in how many days can 45 men dig a canal whose length is double this canal?

total working days for one man only =39*15=585 total working days for canal of double length=2*585=1170 so for 45 men=1170/45=26

total working days for one man only =3915=585
total working days for canal of double length=2585=1170
so for 45 men=1170/45=26