bill has 38 bills he has ten-dollor bills and five-dollor bills only. If he has $260, how, many five-dollor bills does he have?

Let x = 5 dollar bills

Let y = 10

Dollar bills

X + y = 38 bills

Rewrite as Y = 38 - x

5x + 10y = 260 dollars:

5x + 10 (38-x) = 260

5x + 380 - 10x = 260

-5x = - 120

X = - 120/-5

X = 24

He has 24 five dollar bills