প্রশ্ন সংশোধন করুন
প্রশ্ন:
A train travels 10 miles at a speed of 50 miles per hour. How fast must the train teavel on the reture trip if the round-trip travel time is 20 minutes?
A train travels 10 miles at a speed of 50 miles per hour. How fast must the train teavel on the reture trip if the round-trip travel time is 20 minutes?