document.write( "Question 189508: The number of Peggy's 20 cents coins is 4 times that of her $5 coins. If the total amount of these coins is $17.40, how many 20 cents coins does she have?\r
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document.write( "Please answer...I thank you in advance!!:) \n" );
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Algebra.Com's Answer #142190 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( "\n" ); document.write( "Let x be the number of $5 coins. Then the number of 20 cent coins must be 4x.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "When I do coin problems, I usually convert dollars and cents to just cents. Here, the total amount of money is 1740 cents, the $5 coins are worth 500 cents each, and the 20 cent coins are worth 20 cents each.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since we have the quantity x of 500 cent coins, the total value of these coins must be 500x cents. Likewise, the total value of the 20 cent coins must be 20 X 4x or 80x cents.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Adding these two values together must give the total amount of money, so:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solve for x to learn the number of $5 coins, and multiply that by 4 to get the number of 20 cent coins.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |