document.write( "Question 97116: If David has 19 bills in his wallet worth $125, all fives and tens, how many of each bill does he have? \n" ); document.write( "
Algebra.Com's Answer #70690 by checkley71(8403) ![]() You can put this solution on YOUR website! F+T=19 F=19-T \n" ); document.write( "5F+10T=125 NOW SUBSTITUTE (19-T) FOR F IN THIS EQUATION & SOLVE FOR T \n" ); document.write( "5(19-T)+10T=125 \n" ); document.write( "95-5T+10T=125 \n" ); document.write( "5T=125-95 \n" ); document.write( "5T=30 \n" ); document.write( "T=30/5 \n" ); document.write( "T=6 NUMBER OF TEN DOLLAR BILLS. \n" ); document.write( "F=19-6 \n" ); document.write( "F=13 NUMBER OF FIVE DOLLAR BILLS. \n" ); document.write( "PROOF \n" ); document.write( "5*13+10*6=125 \n" ); document.write( "65+60=125 \n" ); document.write( "125=125 \n" ); document.write( " \n" ); document.write( " |