Question

A and b can do a work in 18 days , b and c in 24 days and a and c in 36 days . c can do the work alone is

Answer 1

Part of work is done by a and b in one day = 1/18
Part of work is done by b and c in one day = 1/24
Part of work is done by c and a in one
day = 1/36
Total part work is done by a,b and c in one day = (1/18 +1/24 +1/36)/2=1/16
Work done by c only = total - work done by b and c= (1/16) - (1/18) = 1/144
So c can do the piece work in 144 days