document.write( "Question 734386: 15 workers finish a work in 8 days. How many days would be taken from 12 workers to finish the same work? thank you :)
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Algebra.Com's Answer #448911 by Edwin McCravy(20055)\"\" \"About 
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15 workers finish a work in 8 days. How many days would be taken from 12 workers to finish the same work?
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document.write( "Method 1:\r\n" );
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document.write( "The least common multiple of 15 workers and 12 workers is 60 workers.\r\n" );
document.write( "15 workers is 1/4th of 60 workers and 12 workers is 1/5th of 60 workers.\r\n" );
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\n" ); document.write( "15 workers finish a work in 8 days.
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document.write( "So 4 times as many workers can finish the work in 1/4 the time.\r\n" );
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document.write( "So 60 workers can finish it in only 2 days.\r\n" );
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document.write( "So one-fifth as many workers will take 5 times as long, or 10 days.\r\n" );
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document.write( "Method 2:\r\n" );
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document.write( "You can also use the worker-time-job formula, which is:\r\n" );
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document.write( "\"%28W%5B1%5DT%5B1%5D%29%2FJ%5B1%5D\"\"%22%22=%22%22\"\"%28W%5B2%5DT%5B2%5D%29%2FJ%5B2%5D\"\r\n" );
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document.write( "where\r\n" );
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document.write( "W1 = the number of workers in the first situation.\r\n" );
document.write( "T1 = the number of time units (days in this case) in the first situation.\r\n" );
document.write( "J1 = the number of jobs in the first situation.\r\n" );
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document.write( "W2 = the number of workers in the second situation.\r\n" );
document.write( "T2 = the number of time units (days in this case) in the second situation.\r\n" );
document.write( "J2 = the number of jobs in the second situation.\r\n" );
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document.write( "W1 = 15             W2 = 12     \r\n" );
document.write( "T1 =  8             T2 = the unknown quanity\r\n" );
document.write( "J1 =  1             J2 = 1\r\n" );
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document.write( "\"%28W%5B1%5DT%5B1%5D%29%2FJ%5B1%5D\"\"%22%22=%22%22\"\"%28W%5B2%5DT%5B2%5D%29%2FJ%5B2%5D\"\r\n" );
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document.write( "\"%2815%2A8%29%2F1\"\"%22%22=%22%22\"\"%2812%2AT%5B2%5D%29%2F1\"\r\n" );
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document.write( "15*8 = 12*T2\r\n" );
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document.write( " 120 = 12*T2\r\n" );
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document.write( " \"120%2F12\" = T2\r\n" );
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document.write( "  10 = T2 \r\n" );
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document.write( "Answer 10 days.\r\n" );
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document.write( "Edwin
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