Question

Maggie has 7 bills, all tens and twenties, that

total $100 in value. Find the number of tens, x, and
the number of twenties, y, that Maggie has.

Answer 1

4 tens, 3 twenties

Explanation:

4 tens ($40) and 3 ($60) twenties work. I’m sorry I don’t have a formula for it though.