document.write( "Question 1195052: A boy bought 200 books .he sold 80 of books at a profit 15% and the remaining ones at a profit of 50% he realized rs.27200 in total .what was his cost of books? \n" ); document.write( "
Algebra.Com's Answer #827397 by Alan3354(69443)\"\" \"About 
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A boy bought 200 books .he sold 80 of books at a profit 15% and the remaining ones at a profit of 50% he realized rs.27200 in total .what was his cost of books?
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\n" ); document.write( "C = cost
\n" ); document.write( "80*(C*1.15) + 120*(C*1.5) = 27200
\n" ); document.write( "92C + 180C = 27200
\n" ); document.write( "272C = 27200
\n" ); document.write( "etc
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\n" ); document.write( "Mathtutor's answer and mine are the same.
\n" ); document.write( "Mine shows 100 per book ---> 20000.
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