document.write( "Question 323452: Your piggy bank contains $19.75 in dimes and quarters. There are 100 coins in all. How many dimes are there? \n" ); document.write( "
Algebra.Com's Answer #231474 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! Q+D=100 OR Q=100-D \n" ); document.write( ".25Q+.10D=19.75 \n" ); document.write( ".25(100-D)+.10D=19.75 \n" ); document.write( "25-.25D+.10D=19.75 \n" ); document.write( "-.15D=19.75-25 \n" ); document.write( "-.15D=-5.25 \n" ); document.write( "D=-5.25/-.15 \n" ); document.write( "D=35 DIMES. \n" ); document.write( "100-35=65 QUARTERS. \n" ); document.write( "PROOF: \n" ); document.write( ".25*65+.10*35=19.75 \n" ); document.write( "16.25+3.50=19.75 \n" ); document.write( "59.75=19.75 \n" ); document.write( " |