<PRE><B>Question 1026423</B>
 a contractor took a work to complete in 17 days by 9 employee.
 in 8 days 2/5 work was finished by 9 employee.
 how many extra employee are required to finish the remaining work on time?
:
We know 9 men did 2/5 of the work
How many men are required to do the remaining 3/5 of the work
:
let the completed job = 1
each man did {{{1/8}}} * {{{1/9}}} * {{{2/5}}} = {{{2/360}}} = {{{1/180}}} of the job per day
:
let m = the additional men required to complete the remaining 3/5 of the job in 9 more days
:
the shared work equation, each man working 9 days
9*{{{9/180}}} + 9*{{{m/180}}} = {{{3/5}}}
multiply equation by 180
81 + 9m = 36(3)
9m = 108 - 81
9m = 27
m = 27/9
m = 3 more men required
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