document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=722558>Question 722558</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the weight of 90 books is 50 kg find the weight of 180 such books </SPAN>\n" );
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document.write( "90 books weigh  -------- 50kg<BR>\n" );
document.write( "180 books weigh ------ 180 * 50 / 90 = 100 kg </SPAN>\n" );
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