Ramesh can finish a piece of work in 10 days. Rohan is twice as efficient as Ramesh.If they work together how many days will they need to finish the same amount of work?

• 10/3 days
  
  Ramesh can finish a piece of work in 10 days. Rohan is twice as efficient as Ramesh.
  So Rohan can finish a piece of work in 5 days.
  days needed to finish the same amount of work = 1/(1/5+1/10)=10/3 days
  
• 12 years agoHelpfull: Yes(8) No(0)