document.write( "Question 1081210: Sean Has 19 coins .Coins are worth 5 cents 10 cents or 20 cents. He has as many 5 cents coins as 10 cents and total value of all coins is $2.20.How many 10 cent coins does sean have in his pocket? \n" ); document.write( "
Algebra.Com's Answer #695266 by ikleyn(52855) You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Let \"x\" be the number of 10-cent coins.\r\n" ); document.write( "Then the number of 5-cent coins is x also, and the number of 20-cent coins is (19-2x).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The \"value\" equation is\r\n" ); document.write( "\r\n" ); document.write( "5x + 10x + 20*(19-2x) = 220 cents,\r\n" ); document.write( "\r\n" ); document.write( "15x + 380 - 40x = 220,\r\n" ); document.write( "\r\n" ); document.write( "-25x = 220-380 ---> -25x = -160 ---> x =\r \n" ); document.write( "\n" ); document.write( "May be, the only sense is that other tutors will save their time after reading my answer.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |