Question

When Devon cashed a $450 check at the bank, the teller gave him 18 bills, all $20 bills and $50 bills. Which system of equations can be used to find how many of each type of bill Devon received?

Answer 1

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

Answer 2

The system of the equation should be x+y=18 and 20x+50y=450.

Given that,

• The amount of the check $450 should be cashed at the bank.
• The bills are 18 and all contains of $20 bills and $50 bills.
• Let us assume the $20 bills be x and $50 bills be y.

Based on the above information, the equations are

x + y = 18

And

20x + 50y = 450

Therefore we can conclude that the system of the equation should be x+y=18 and 20x+50y=450.

Learn more: brainly.com/question/24169758