SOLUTION: A teller has 49 $10 and $20 bills in her cash drawer. The value of the bills is $870. How many $10 bills does she have?

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Question 107756: A teller has 49 $10 and $20 bills in her cash drawer. The value of the bills is $870. How many $10 bills does she have?

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x=tens, so 49-x=twenties ... 10(x)+20(49-x)=870 ... 10x+980-20x=870