প্রশ্ন সংশোধন করুন
প্রশ্ন:
When the speed is increased by 4 miles per hour, it takes 4 hour less to cover a distance of 32 km. Find the previous speed.
When the speed is increased by 4 miles per hour, it takes 4 hour less to cover a distance of 32 km. Find the previous speed.