Hard Level
Dhaka Express and Khulna Express trains left from two stations towards Khulna station and Dhaka station respectively. 3 hours after they met the trains were 675 miles apart. The Dhaka Express arrived at its destination 16 hours after their meeting and the Khulna Express arrived at its destination 25 hours after their meeting. How many hours Dhaka Express ano did it take for the the whole trip?