document.write( "Question 1113725: A fort has enough provisions to feed everyone in it for 90 days. After 20 days, 600 more soldiers arrive as reinforcements, and the food only lasts 50 days longer. How many people were in the fort originally? \n" ); document.write( "

Algebra.Com's Answer #728801 by ikleyn(52777) $\"\"$ $\"About$

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document.write( "n*(90-20) = (n+600)*50   ( <<<---=== it is what the condition says . . . )\r\n" );
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document.write( "70n = 50n + 3000\r\n" );
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document.write( "20n = 3000\r\n" );
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document.write( "n =  = 1500.\r\n" );
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document.write( "Answer.  1500 people were in the fort originally.\r\n" );
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