valtherr2001
contestada

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?

Respuesta :

FractalX
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

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.

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