(3) Let the original work = 60 units New work = 60 + 40% of 60 = 84units One day work of 1 man = 1 units One day work of 1 woman =1/ 1.25 5=4/5= units One day work of 1 boy=
4
5
1.2
=
2
3
units One day work of 6 men, 5 womanand 3 boy = 6+4+2=12 units ∴ Number of days required tofinish 84 units of work=