Aniket and Sudhir do the work in 28 days and 63 days respectively. For that work they charge 720 Rs. So instead of working together they asks Mangesh to join them in work and completes the work in 7 days so how much money they have to pay to the Mangesh?A.  230 RsB. 460 Rs C. 280 RsD. 560 Rs