document.write( "Question 1106543: at a school exhibition, a boy had a book stall. the cost of each book was rs 50. the selling price per book was rs 85, what was his profit percent if he sold 12 books?
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Algebra.Com's Answer #839571 by josgarithmetic(39617)\"\" \"About 
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profit of rs 35 per book.\r
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\n" ); document.write( "\n" ); document.write( "Twelve books?
\n" ); document.write( "\"35%2A12=420\"
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