প্রশ্ন সংশোধন করুন
প্রশ্ন:
A pump can fill with water in 2 hours. Because of a leak, it took hours to fill the bank . The leak can drain all water of the tank in:
A pump can fill with water in 2 hours. Because of a leak, it took hours to fill the bank . The leak can drain all water of the tank in: