document.write( "Question 434946: Bertha has 33 coins in her pocket totaling $5.25. If she only has nickles and quarters, how many of each type of coin does she have \n" ); document.write( "
Algebra.Com's Answer #853264 by ikleyn(53538) You can put this solution on YOUR website! . \n" ); document.write( "Bertha has 33 coins in her pocket totaling $5.25. If she only has nickles and quarters, \n" ); document.write( "how many of each type of coin does she have \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " In the post by @mananth, his second equation in the 4th line is written incorrectly.\r \n" ); document.write( "\n" ); document.write( " It makes all the subsequent solution defective.\r \n" ); document.write( "\n" ); document.write( " So, I came to make the job accurately, in a way as it SHOULD be done.\r \n" ); document.write( "\n" ); document.write( " In my solution, I will use one unknown and one equation, since it provides a shorter way.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Let x be the number of quarters.\r\n" ); document.write( "\r\n" ); document.write( "Then the number of nickels is (33-x).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Write the total value equation\r\n" ); document.write( "\r\n" ); document.write( " 25x + 5*(33-x) = 525 cents.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Simplify and find x\r\n" ); document.write( "\r\n" ); document.write( " 25x + 165 - 5x = 525,\r\n" ); document.write( "\r\n" ); document.write( " 25x - 5x = 525 - 165,\r\n" ); document.write( "\r\n" ); document.write( " 20x = 360,\r\n" ); document.write( "\r\n" ); document.write( " x = 360/20 = 18.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. 18 quarters and 33-18 = 15 nickels.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "CHECK for the total 25*18 + 5*15 = 525 cents, precisely as it is given in the problem.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved correctly.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |