Work done by 60 men in 60 days =
Work done by 60 men in 1 day =
=
Work done by 60 men in 30 days =
×30 =
work
Number of man required to do
of work in 30 days = 60 men
Number of men required to do 1 part of work in 30 days on = 60 ×
= 160
Number of men required to do
of work in 30 days on = 160 ×
= 40 men
Number of men discharged = 60 - 40 = 20 men.