document.write( "Question 856603: \"A bank teller has 35 bills in $5, $10, and $20 denominations. The total value from these bills is $370. The total number of $10 bills and $20 bills is 7 more than the number of $5. How many bills of each denomination does the teller have?\"\r
\n" ); document.write( "\n" ); document.write( "What I have done:\r
\n" ); document.write( "\n" ); document.write( "x+y+z=35
\n" ); document.write( "5x+10y+20z=370
\n" ); document.write( "y+z+7=x\r
\n" ); document.write( "\n" ); document.write( "Then I keep getting fractions/decimals which is not correct \n" ); document.write( "
Algebra.Com's Answer #516066 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
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document.write( "Hi,
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document.write( "The total number of $10 bills and $20 bills is 7 more than the number of $5
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document.write( " y + z = x + 7
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document.write( "-7 + (y +z) = x
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document.write( "35 - (y +z) = x
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document.write( "  28 = 2x
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document.write( "  14 = x, number of $5 bills
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document.write( "(y + z) = 21 , y = \"+21-z\"
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document.write( "5x+10y+20z=370   |Yes! Now substitute
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document.write( " $90 + $10(21-z) + $20z = $370
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document.write( "  $90 + $210 + $10z = $370
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document.write( "           $10z = 70 
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document.write( "             z = 7,  number of $20 bills. There are 14 $10 bills
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document.write( "CHECKING our answer***
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document.write( " $90 + $140 + $140 = $$370
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document.write( "Wish You the Best in your Studies.\r
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