document.write( "Question 987726: 4/5 of the pupils who took the exam passed. 18 pupils failed. how many pupils passed?
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Algebra.Com's Answer #608470 by Edwin McCravy(20060)\"\" \"About 
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document.write( "\"4%2F5\" of the pupils who took the exam passed. \r\n" );
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document.write( "So \"1-4%2F5=5%2F5-4%2F5=1%2F5\" failed\r\n" );
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document.write( "18 pupils failed. \r\n" );
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document.write( "So if there are N pupils, then since 1/5 failed,\r\n" );
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document.write( "\"1%2F5\"N = 18\r\n" );
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document.write( "Multiply both sides by 5\r\n" );
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document.write( "N = 90\r\n" );
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document.write( "how many pupils passed?\r\n" );
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document.write( "90 - 18 = 72.\r\n" );
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document.write( "Edwin
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