document.write( "Question 1026996: A photocopier increases the sides of a square in the ratio 2:3. What percentage increase is this? \n" ); document.write( "
Algebra.Com's Answer #642276 by Theo(13342)![]() ![]() You can put this solution on YOUR website! let a = the length of the side of the original square. \n" ); document.write( "let b = the length of the side of the increased square.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get the ratio a/b = 2/3.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for b to get b = 3/2 * a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "since 3/2 = 1.5, then you get b = 1.5 * a\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b is 1.5 * the size of a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the increase is calculated by subtracting a from b.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b - a is equivalent to 1.5 * a - a because b = 1.5 * a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1.5 * a - a becomes equal to .5 * a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the increase is .5 * a which is equivalent to 50% * a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a is increased by 50% of a to get b which is equal to 150% of a.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "for example:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "assuming a is equal to 10.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "it is increased by 50% of 10 which means it is increased by 5.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the new side length is 10 + 5 = 15.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the new side length is equal to 150% of 10 which is equal to 1.5 * 10 which is equal to 15.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |