document.write( "Question 553451: Example : The supplier gives me 20% discount on R200.00 which means I will have a nett amount of R160.00 that I will be paying the supplier, after discount is given , why does it happen when I put 25% markup on that amount (R160.00) after the discount , it stays the same as the amount before discount(R200.00) ? is this correct ? what will be the correct formula ? \n" ); document.write( "

Algebra.Com's Answer #360842 by Theo(13342) $\"\"$ $\"About$

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you start at 200 and apply a 20% discount which gets you from 200 to 160.
\n" ); document.write( "now you charge 25% markup which gets you from 160 to get 200.
\n" ); document.write( "20% of 200 is equal to .2 * 200 is equal to 40.
\n" ); document.write( "25% of 160 is equal to .25 * 160 is equal to 40.
\n" ); document.write( "the percents are different but the base that the percent is being applied to is also different.
\n" ); document.write( "it just so happens that the discount and the markup in this case are the same.
\n" ); document.write( "any other markup percent would have resulted in a different number.
\n" ); document.write( "suppose you have 100 and discount it by 50%.
\n" ); document.write( "you will be left with 50.
\n" ); document.write( "now you mark that 50 up by 50%.
\n" ); document.write( "you will be left with 75.
\n" ); document.write( "the same 50% results in a different number because it is being applied to a different base.
\n" ); document.write( "50% of 100 = 50
\n" ); document.write( "50% of 50 = 25\r
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