প্রশ্ন সংশোধন করুন
প্রশ্ন:
A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __
A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __