1. The capacity of an elevator is either 20 children or 15 adult. If 12 children are currently in the elevator, how many adults can still get in?

Do you think it could be 6?

I'm not saying that this answer is correct, because this sounds like homework.

Well is it home work? Do you know there is a homework help line here ar AMHD? We don't do home work but can help you figure out hopw you can do it. Is that what you need?

You can work through that using algebra, or fractions, or percentages.

Can you al least show us what you tried to do?