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Marty made a $220 bank deposit using $10 bills and $5 bills. She gave the teller a total of 38 bills, how many $5 bills were in the deposit?
A) 6 five-dollar bills
B) 28 five-dollar bills
C) 32 five-dollar bills
D) 34 five-dollar bills

Respuesta :

FreshmanGeek02
The Answer would be C)32 five-dollar bills
JeanaShupp

Answer:  C) 32 five-dollar bills

Step-by-step explanation:

Let x be the number of $10 bills and y be the number of $5 bills .

Then according to the given question we have,

[tex]x+y=38...............(1)\\\\10x+5y=220[/tex]

Multiplying equation (1) by 10 on both sides, we get

[tex]10x+10y=380..............................(3)[/tex]

Now, subtract equation (2) from (3), we get

[tex]5y=160\\\\\Rightarrow\ y=32[/tex]

Hence, there were 32 five dollars bills in deposit.