Question

A can do a piece of work in 18 days and b can do it in a 36 days a and b worked for 4 days and left the work find the fraction of work remaining

Answer 1

one day work done by A = 1/18

one. day work done by B =1/36

one day work by them =1/18+1/36=2/18+1/36=3/36=1/12

four days work =4/12=1/3

remaining work =1-1/3=2/3