Question

If 15 men take 60days to complete a job find the time taken by 45man completedit

Answer 1

Let the no. of days be x
15:60::x:45
15×45=60×X
X =(15×45) 60
x= 11.25

Answer 2

15 men take 60 days to complete a job
1 (15×60)
45 900÷45=20days