প্রশ্ন সংশোধন করুন
প্রশ্ন:
How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train , if the speed of the train is 63 km / hr?
How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train , if the speed of the train is 63 km / hr?