document.write( "Question 1135047: Mr. chittocks political button collection currently has 840 buttons. This represents a 12% increase over his total collection of 3 years ago. Determine how many buttons were in his collection 3 years ago \n" ); document.write( "
Algebra.Com's Answer #752563 by ikleyn(52943) You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Let x be the number three years ago.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "According to the condition, this number \"x\" is the base for the comparison,\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "so your equation is\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " x*(1+0.12) = 840\r\n" ); document.write( "\r\n" ); document.write( " 1.12x = 840\r\n" ); document.write( "\r\n" ); document.write( " x = 840/1.12 = 750.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. 3 years ago the collection was 750 buttons.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-----------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "On percentage, see the lessons \r \n" ); document.write( "\n" ); document.write( " - Percentage problems\r \n" ); document.write( "\n" ); document.write( " - Percentage word problems (Type 1 problems, Finding the Part)\r \n" ); document.write( "\n" ); document.write( " - Percentage word problems (Type 2 problems, Finding the Rate)\r \n" ); document.write( "\n" ); document.write( " - Percentage word problems (Type 3 problems, Finding the Base)\r \n" ); document.write( "\n" ); document.write( " - More complicated percentage problems\r \n" ); document.write( "\n" ); document.write( " - Problems on percentage that lead to unexpected results\r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "They are written specially for you.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Read them and become an expert in this area.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Start from the very first lesson of the list.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |