প্রশ্ন সংশোধন করুন
প্রশ্ন:
A person travels a distance of 30 km at a speed of 60 km /hr and then comes back at twice the speed. How may minutes did he take in total?
A person travels a distance of 30 km at a speed of 60 km /hr and then comes back at twice the speed. How may minutes did he take in total?