Rahul complete the work in 20 days Rohit complete the same work in 25 days Total work = 100 units (LCM of 20 and 25) One day work of Rahul =100∕20=5 units One day work of Rohit =100∕25=4 units 10 day's work of Rahul and Rohit =(5+4)×10 Work completed by both =[(5+4)×10]=90 units Remaining work done by Ravi =10 units ∴ Share of Ravi =(10∕100)×3000= Rs. 300