Final answer:
Based on the given information, some people left a 50 cent tip for Ben's mom, but their specific actions with the tip are not mentioned.
Step-by-step explanation:
Based on the given information, it seems that some people left a 50 cent tip for Ben's mom and she mentioned that 'they wouldn't enter his room with the food trays-left them outside even when he couldn't walk.'
Since the student didn't provide any further details, we can't say for sure what exactly some people did with the 50 cent tip, but it is possible that they left it for Ben's mom as a token of appreciation for her services.
However, without more context, we can only speculate about the specific actions taken with the 50 cent tip.
Learn more about actions with the 50 cent tip