document.write( "Question 95817: An automatic coin counter at a bank indicates that $65 in dimes and quarters was processed. If there were 389 coins how many of each were there? \n" ); document.write( "
Algebra.Com's Answer #69836 by checkley71(8403) ![]() You can put this solution on YOUR website! D+Q=389 OR D=389-Q \n" ); document.write( "10(389-Q)+25Q=6500 \n" ); document.write( "3890-10Q+25Q=6500 \n" ); document.write( "15Q=6500-3890 \n" ); document.write( "15Q=2610 \n" ); document.write( "Q=2610/15 \n" ); document.write( "Q=174 QUARTERS \n" ); document.write( "389-174=215 DIMES. \n" ); document.write( "PROOF \n" ); document.write( "10*215+25*174=6500 \n" ); document.write( "2150+4350=6500 \n" ); document.write( "6500=6500 \n" ); document.write( " |