document.write( "Question 326801: I am required to pay 5% on the principal ($5000)...I know that 5% = $250. But, what if I knew what 5% was and didn't know what the principal amount was? How would I calculate the principal amount? \n" ); document.write( "
Algebra.Com's Answer #234018 by JBarnum(2146)\"\" \"About 
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5%=.05
\n" ); document.write( ".05(5000)=250
\n" ); document.write( "so we work backwards to get amount
\n" ); document.write( ".05(x)=250
\n" ); document.write( "x=250/.05
\n" ); document.write( "
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