document.write( "Question 1075087: a pile of 40 coins consists of nickels and dimes. The total value of the coins is $2.40. find the number of each type of coin. \n" ); document.write( "
Algebra.Com's Answer #689776 by ikleyn(52795)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "10*D + 5*(40-D) = 240 cents. (D = number of dimes).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10D + 200 - 5D = 240,\r \n" ); document.write( "\n" ); document.write( "5D = 240-200 = 40 ---> D = \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Answer. 8 dimes and 40-8 = 32 nickels. \n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There is entire bunch of lessons on coin problems\r \n" ); document.write( "\n" ); document.write( " - Coin problems\r \n" ); document.write( "\n" ); document.write( " - More Coin problems\r \n" ); document.write( "\n" ); document.write( " - Solving coin problems without using equations\r \n" ); document.write( "\n" ); document.write( " - Kevin and Randy Muise have a jar containing coins\r \n" ); document.write( "\n" ); document.write( " - Typical coin problems from the archive\r \n" ); document.write( "\n" ); document.write( " - More complicated coin problems\r \n" ); document.write( "\n" ); document.write( " - Solving coin problems mentally by grouping without using equations\r \n" ); document.write( "\n" ); document.write( " - Santa Claus helps solving coin problem\r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You will find there the lessons for all levels - from introductory to advanced, \n" ); document.write( "and for all methods used - from one equation to two equations and even without equations. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution of coin problems.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Coin problems\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |