Two trains whose speed is 54 km/h and 72 km/h respectively are going in the same direction. In what time will the second train cross the first if their lengths are 100 meters and 80 meters respectively?

• A. 25सेकेण्ड
• B. 36सेकेण्ड
• C. 35सेकेण्ड
• D. 45सेकेण्ड