Ahmed and Salahadin left Pearson's room and went down stairs. They sat down and the manager brought them some coffee. How can we find the seventh box?asked Ahmed. I need your help, replied Salahadin. How can I help you? asked Ahmed. The murderer took the box with him.Said Salahadin. It was heavy and it's hot today. The murderer did not carry the box very far. Perhaps he took a taxi. Perhaps he had his own car, said Ahmed. We don't know, replied Salahadin. But, perhaps he took a taxi. That's possible, agreed Ahmed. And you want to find that taxi. But, how can I help you?