document.write( "Question 103199This question is from textbook Prentice Hall
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document.write( ": A cashier's drawer has some $5 bills, some $10 bills, and some $20 bills. There are 15 bills worth a total of $185. How many $5 bills, $10 bills, and $20 bills are there? \n" );
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Algebra.Com's Answer #75054 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! x+y+z=15 number of bills \n" ); document.write( "5x+10y+20z=185 amount in the drawer. \n" ); document.write( "3 unknowns & only 2 equations needs a table \n" ); document.write( "x=====y=====z====value \n" ); document.write( "1=====1=====13===5+10+260=275 too much! \n" ); document.write( "1=====2=====12===5+20+240=265 too much \n" ); document.write( "1=====5=====9====5+50+180=235 too much \n" ); document.write( "1=====10====4====5+100+80=185 looking good for an answer. \n" ); document.write( "proof \n" ); document.write( "1+10+4=15 bills. \n" ); document.write( "1*5+10*10+4*20=5+100+80=185 value. \n" ); document.write( " \n" ); document.write( " |