Question 687879
Let x=number of employees it takes to complete the job in 72 days
It takes 18*95=1710 employee-days to do the job
In other words, 1 employee can complete the job in 1710/1=1710 days
2 employees in 1710/2
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18 employees in 1710/18=95 days
x employees in 1710/x=72 days
x=23 3/4 employees.  Since we can't have 3/4 of an employee, the answer has to be 24
CK
23.75*72=1710

Hope this helps---ptaylor