Question

Joe asked a bank teller to cash a $570 check using $20 bills and $50 bills, If the teller gave him a total of 15 bills, how many of each type of bill did he receiver

Answer 1

9 $50 bills and 6 $20 bills

Explanation:

Let f = number of $50 bills.

Let t = number of $20 bills.

f + t = 15

50f + 20t = 570

f = 15 - t

50(15 - t) + 20t = 570

750 - 50t + 20t = 570

-30t = -180

t = 6

f + t = 15

f + 6 = 15

f = 9

Answer: 9 $50 bills and 6 $20 bills