document.write( "Question 1036718: when paying her telephone bill lucy paid $45 instead of $40 ,what is percentage error? \n" ); document.write( "

Algebra.Com's Answer #651430 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "There are two ways to do it.\r\n" );
document.write( "\r\n" );
document.write( "First way:\r\n" );
document.write( "\r\n" );
document.write( "We find the ratio of the mistaken amount to the correct amount:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "So the mistaken amount paid was 12.5% more than 100% of the correct \r\n" );
document.write( "amount.  I.e., subtract 100%\r\n" );
document.write( "\r\n" );
document.write( "Answer: 12.5%\r\n" );
document.write( "\r\n" );
document.write( "----------------\r\n" );
document.write( "\r\n" );
document.write( "Second way:\r\n" );
document.write( "\r\n" );
document.write( "We subtract the right amount from the wrong amount.\r\n" );
document.write( "\r\n" );
document.write( "$45 - $40 = $5\r\n" );
document.write( "\r\n" );
document.write( "Then we find what percent of the right amount $5 is\r\n" );
document.write( "\r\n" );
document.write( ".\r\n" );
document.write( "\r\n" );
document.write( "Both ways are correct.  Take your pick.\r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );