Bus X left Delhi for Jaipur at 4:00 am and Bus Y left Jaipur for Delhi at 6:00 am, while at 8:00 am the distance between both buses X and Y is (3T+2) km. If both buses crossed each other at 8:04 am and speed of bus Y is ((D/2)-280) km/hr more than that of bus X, then find total distance (in km) between Delhi and Jaipur.