Hi, I need some help with this question. Could anyone help?

Tammy has 15 coins that total $1. What coins does she have and how many of each? Is there more than one answer? Find all the possibilities.

Thanks,
Hannah

if she has 3 quarters, that leaves 12 coins for 25 cents. So,

3*25 + 10 + 5 + 10*1 = 100

You can probably find others.