Question

1. what you can do to persuade them not to waste food, and
2.what solutions can be offered

Answer 1

I will tell them not to waste food and throw it into waste bin.
It is not a good thing to waste food when there are people not having enough food to eat.  The leftovers in a restaurant may be sent to some orphanages. But it is perhaps not the proper way of feeding orphans and beggars, to give them discarded and thrown food.

For complete answer see http://brainly.in/question/747142.