document.write( "Question 612143: 6 men can dig a trench in 3 days. How many days will it take 9 men to dig the same trench at the same rate? \n" ); document.write( "
Algebra.Com's Answer #385309 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
6 men can dig a trench in 3 days. How many days will it take 9 men to dig the same trench at the same rate?\r
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document.write( "Since 6 men can dig a trench in 3 days, 3 times as many men, or 18 men,\r\n" );
document.write( "can do it in 1/3 the time or just 1 day.\r\n" );
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document.write( "So half of 18 men, or 9 men, will take twice as long as 18 men, or 2 days.\r\n" );
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document.write( "Another way to do it is that this fraction must stay constant:\r\n" );
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document.write( "WORKERS × TIME     WORKERS × TIME\r\n" );
document.write( "——————————————  = ——————————————    \r\n" );
document.write( "     JOBS               JOBS\r\n" );
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document.write( "     6 × 3            9 × T \r\n" );
document.write( "     —————     =     ————————\r\n" );
document.write( "       1                1\r\n" );
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document.write( "       18            9T \r\n" );
document.write( "      ———     =     —————\r\n" );
document.write( "       1             1\r\n" );
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document.write( "       18    =     9T\r\n" );
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document.write( "        2    =     T\r\n" );
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document.write( "2 days.\r\n" );
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document.write( "Edwin

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