document.write( "Question 152352: how do i work a reverse percentage...for example, if i multiply .085% by 100, i get 8.5...how do reverse calculate this equation to get back to 100, if i didn't know that 100 was the original number the percentage was calculated from? \n" ); document.write( "

Algebra.Com's Answer #111995 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
Any $\"percentage\"$ data you have, you always deal with $\"100\"$ .
\n" ); document.write( "Before you use given data in percentage(%), you always divide it by 100 for you to use it in the equation.
\n" ); document.write( "IN GENERAL, YOU DIVIDE THE GIVEN % BY 100 FOR YOU TO USE IT OR KNOW IT, OR FOR ANYTHING. IN REVERSE, WHEN YOU DIVIDE IT THE FIRST TIME, MULTIPLY IT THIS TIME 100 TO GET ORIGINAL VALUE.
\n" ); document.write( "EXAMPLE:
\n" ); document.write( "You get 30% out of 50 questions:
\n" ); document.write( "Solution: $\"%2830%2F100%29%2A50=0.30%2A50=15\"$
\n" ); document.write( "To check (by reversing):
\n" ); document.write( " $\"%2815%2F50%29%2A100=0.30%2A100\"$ =30%
\n" ); document.write( "See, you always go back to $\"100\"$
\n" ); document.write( "Hope this help.
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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