Bank Math Master৩টি পরীক্ষায় এসেছেপ্রশ্ন ১৪A train 200 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 16 seconds. The speed of the train is:ক42 km/hrখ45 km/hrগ50 km/hrঘ52 km/hrউত্তর দেখুন