document.write( "Question 219989: \"a wallet contains $5 bills and $10 bills. There are 15 bills in the wallet with a total value of $120. find the number of $5 bills and $10 bills\" Im having trouble figuring this problem out can u show me how to set it up and solve? \n" ); document.write( "
Algebra.Com's Answer #165273 by stanbon(75887)\"\" \"About 
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\"a wallet contains $5 bills and $10 bills. There are 15 bills in the wallet with a total value of $120. find the number of $5 bills and $10 bills\"
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\n" ); document.write( "Quantity Equation: f + t = 15 bills
\n" ); document.write( "Value Equation::::5f +10t = 120 dollars
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\n" ); document.write( "Multiply thru the Quantity Eqution by 5 to get:
\n" ); document.write( "5f + 5t = 75
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\n" ); document.write( "\n" ); document.write( "Subtract that Eq. from the Value equation and solve for \"t\":
\n" ); document.write( "5t = 45
\n" ); document.write( "t = 9 ($ of ten dollar bills)
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\n" ); document.write( "Since f+t = 15, f +9 = 15, and f = 6 (# of 5 dollar bills)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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