Ram can do work in 15 days and Mohan can do the same work in 20 days. They both work together for 4 days and both leave the work. What fraction of work is left now?

• 8/15
  
  Work completed by Ram and Mohan in 4 days = 4[(1/15)+(1/20)]=7/15
  So fraction of work left=1- (7/15)=8/15
• 8 years agoHelpfull: Yes(11) No(1)