document.write( "Question 257147: A bank teller cashed a check for $630 using $10 bills and $20 bills. The teller handed 21 more $10 bills than $20 bills to the customer, Determine how many bills of each denomination were handed to the customer. \n" ); document.write( "

Algebra.Com's Answer #189269 by dabanfield(803) $\"\"$ $\"About$

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A bank teller cashed a check for $630 using $10 bills and $20 bills. The teller handed 21 more $10 bills than $20 bills to the customer, Determine how many bills of each denomination were handed to the customer.\r
\n" ); document.write( "\n" ); document.write( "Let x be the number of $10 bills. Then x - 21 = the number of $20 bills.\r
\n" ); document.write( "\n" ); document.write( "So we have:\r
\n" ); document.write( "\n" ); document.write( "10*x + 20*(x-21) = 630
\n" ); document.write( "10*x + 20*x-420 = 630
\n" ); document.write( "30*x = 1050
\n" ); document.write( "x = 35 (ten dollar bills)
\n" ); document.write( "x-21 = 14 (twenty dollar bills) \n" ); document.write( "

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