Bank Math Master১টি পরীক্ষায় এসেছেপ্রশ্ন ৬A train crosses a platform 300 meters long in 50 seconds and another platform 150 meters long in 35 seconds. What is the length of the train?ক320 metersখ280 metersগ200 metersঘ240 metersউত্তর দেখুন