document.write( "Question 240411: A cashier has only five-dollar and twenty-dollar bills in her register. If the register contains 19 bills worth $215, how many five-dollar bills does she have? \n" ); document.write( "
Algebra.Com's Answer #176166 by checkley77(12844)\"\" \"About 
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T+F=19 OR T=19-F
\n" ); document.write( "20T+5F=215
\n" ); document.write( "20(19-F)+5F=215
\n" ); document.write( "380-20F+5F=215
\n" ); document.write( "-15F=215-380
\n" ); document.write( "-15F=-165
\n" ); document.write( "F=-165/-15
\n" ); document.write( "F=11 FIVE DOLLAR BILLS.
\n" ); document.write( "19-11=8 20 DOLLAR BILLS.
\n" ); document.write( "PROOF:
\n" ); document.write( "20*8+5*11=215
\n" ); document.write( "160+55=215
\n" ); document.write( "215=215
\n" ); document.write( "
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