document.write( "Question 1016474: Shakira has 50 coins in quarters and dimes totaling $9.95. How many of each coin does she have? \n" ); document.write( "
Algebra.Com's Answer #805331 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 = 50 \n" ); document.write( "10d + 25q = 995\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply the first equation by 25. We are using elimination to get rid of d.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "25d + 25q = 1250 \n" ); document.write( "10d + 25q = 995\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtracting, we get 15d = 225, or d = 17.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Shakira has 17 dimes and 33 quarters. \n" ); document.write( " |