1. a and b can do a piece of work in 7 days. with the help of c they finish the work in 5 days. c alone can do that piece of work in?
Answers
Answered by
0
a and b can do work in 7 days
in 1 day they can do 1/7 work
a,b and c can do same work in 5 day in 1 day 1/5 work
c in one day can do=1/5-1/7
2/35 Work
so it will take 35/2 days for c alone to do the work=17.5 days
in 1 day they can do 1/7 work
a,b and c can do same work in 5 day in 1 day 1/5 work
c in one day can do=1/5-1/7
2/35 Work
so it will take 35/2 days for c alone to do the work=17.5 days
Similar questions