document.write( "Question 978597: A book was sold for $20, making a 25% profit on the selling price. What was the cost price?
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Algebra.Com's Answer #599962 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
Hi there,
\n" ); document.write( "100 + 25 = 125%
\n" ); document.write( "125% = $20
\n" ); document.write( "1% = $20/125
\n" ); document.write( "100% = $20/125 x 100
\n" ); document.write( "100% = $16
\n" ); document.write( "Cost price = $16
\n" ); document.write( "Hope this helps:-)
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