Question

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

Answer 1

The Answer would be C)32 five-dollar bills

Answer 2

Answer: C) 32 five-dollar bills

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,

`x+y=38...............(1)\\\\10x+5y=220`

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

`10x+10y=380..............................(3)`

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

`5y=160\\\\\Rightarrow\ y=32`

Hence, there were 32 five dollars bills in deposit.