Hey There!!!!
The Answer Is > 240 x 3 = 720 so 720 is your answer!!
Please Mark Me Brainliest :) :) Annierosehodge (: (:
You have two totals: total # of bills and total amount of $. Using x as #of 20s, and y as # of 50s, you can use the system
x+y=18
20x+50y=450
27 times..... Let me know if you want help knowing what I did. :)