document.write( "Question 963733: You have a piggy bank containing a total of 99 coins in dimes and quarters. If the piggy bank contains $17.70, how many dimes are in the piggy bank? \n" ); document.write( "
Algebra.Com's Answer #808148 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! d = number of dimes \n" ); document.write( "q = number of quarters\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "d + q = 99 \n" ); document.write( "10d + 25q = 1770\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "25d + 25q = 2475 \n" ); document.write( "-10d - 25q = -1770 \n" ); document.write( "----------------------- \n" ); document.write( "15d = 705 \n" ); document.write( "d = 47\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 47 dimes in the piggy bank. \n" ); document.write( " |