ruhi saini answered question 2/13/2011 Person A can finish 2/5 of work and person B can finish 3/5 of work. If A completed some 1/9 of his work and B completed 5/18 of his work. What fraction of work is not yet completed by both? Total work is 2/5+3/5=1 so, A use to do 2/5th work ,but he has completed =2/5*1/9 = 2/45 work II,y B use to do 3/5th work ,but he has completed =3/5*5/18= 1/6work left out work = 1-(2/45 -1/6)= 71/90