Rahul, Rajeev and Rohan are three friends. Rahul and Rajeev borrowed ₹4200 at 8% per annum from Rohan. Rahul borrowed for 3 years and Rajeev borrowed the same amount for 5 years. Find the difference in the respective interests paid by Rahul and Rajeev at the end of their term. What is the final amount ,paid individually, by both of them to Rohan? Pls answer in 5 mins