Theresa has $26 in her wallet. The bills are worth either $5 or $1. If there are 14 bills total, how many does she have of each type?

1 answer

x = # of $5 y = # of $1

x + y = 14
5x+ y = 26

-x-y = -14
5x + y = 26

4x = 12 x = 3 y = 11