Answer and Explanation:
To provide a clear and concise answer to the question, it is important to note that the context and specific details of the situation are missing. Without more information, it is not possible to determine why Amma allowed Patil to take away the cyclostyling machine or why Mohan was opposed to it.
In order to better understand the reasons behind these actions, it would be helpful to have additional information about the characters, their motivations, and the circumstances surrounding the situation. Without these details, it is not possible to provide an accurate and informative answer.
If you can provide more context or specific details about the story or situation, I would be happy to help you analyze the reasons behind Amma's decision and Mohan's opposition.