document.write( "Question 716721: If 25% of a number is 12.5, what is the original number \n" ); document.write( "
Algebra.Com's Answer #440436 by jndarrell(58)\"\" \"About 
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A proportion is great for these.\r
\n" ); document.write( "\n" ); document.write( "new number over the original = % over 100\r
\n" ); document.write( "\n" ); document.write( "12.5/x=25/100
\n" ); document.write( "Cross multiply
\n" ); document.write( "25x=1250
\n" ); document.write( "Divide both sides by 25 to get the x alone
\n" ); document.write( "x=50\r
\n" ); document.write( "\n" ); document.write( "To check your work, plug the x value into the original equation and work the same steps through.\r
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