document.write( "Question 426992: A bank teller has 54 $4 and $20 bills in her cash drawer. The value of the bills of $780. How many $5 bills are there?\r
\n" ); document.write( "\n" ); document.write( "I tried X+Y= 54
\n" ); document.write( " X-Y= 20 \r
\n" ); document.write( "\n" ); document.write( "2X=34
\n" ); document.write( "X-17 $5 BILLS\r
\n" ); document.write( "\n" ); document.write( "THIS DOES NOT SEEM RIGHT \n" ); document.write( "
Algebra.Com's Answer #296969 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
A bank teller has 54 $5 and $20 bills in her cash drawer. The value of the bills of $780. How many $5 bills are there?
\n" ); document.write( "Quantity Eq: f + t = 54 bills
\n" ); document.write( "Value Eq: 5f+20t = 780 dollars
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\n" ); document.write( "Divide thru the Value Eq by 5
\n" ); document.write( "f+t = 54
\n" ); document.write( "f+4t=156
\n" ); document.write( "---
\n" ); document.write( "Subtract and solve for \"t\":
\n" ); document.write( "3t =102
\n" ); document.write( "t = 34 (# of $20 bills)
\n" ); document.write( "---
\n" ); document.write( "Solve for \"f\":
\n" ); document.write( "f+t = 54
\n" ); document.write( "f+34 = 54
\n" ); document.write( "f = 20 (# of $5 bills)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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