document.write( "Question 767351: respected sir 1] a man sold an article at a profit of 25% . if he had bought for 20% less and sold for rs 63 less, he would have gained 30%. what is the cost price of article?
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Algebra.Com's Answer #467612 by htmentor(1343)\"\" \"About 
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Let P = the purchase price
\n" ); document.write( "Let S = the selling price
\n" ); document.write( "Since the article was sold for a 25% profit we have
\n" ); document.write( "S = 1.25P
\n" ); document.write( "If he had bought it for 20% less, the price would have been 0.8P
\n" ); document.write( "If sold for 63 less, the selling price would have been S - 63, and at this price he would have made a 30% profit
\n" ); document.write( "In equation form, this is:
\n" ); document.write( "S - 63 = 1.3*0.8P
\n" ); document.write( "Substitute the 1st equation in the 2nd:
\n" ); document.write( "1.25P - 63 = 1.3*0.8P
\n" ); document.write( "Solve for P:
\n" ); document.write( "1.25P - 1.04P = 63
\n" ); document.write( "0.21P = 63
\n" ); document.write( "P = 300
\n" ); document.write( "So the original price was 300
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