document.write( "Question 631704: It takes 7 people 12 hours to complete a job. If they worked at the same rate, how many people would it take to complete the job in 16 hours. \n" ); document.write( "
Algebra.Com's Answer #397765 by Edwin McCravy(20056)\"\" \"About 
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document.write( "It takes 7 people 12 hours to complete a job. If they worked at the same rate,\r\n" );
document.write( "how many people would it take to complete the job in 16 hours.\r\n" );
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document.write( "Use the job-worker-time 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 = 7            W2 = the unknown quantity     \r\n" );
document.write( "T1 = 12            T2 = 16 \r\n" );
document.write( "J1 = 1             J2 = 1\r\n" );
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document.write( "[There was only 1 job, so the number of jobs in both situations is 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( "\"%287%2A12%29%2F1\"\"%22%22=%22%22\"\"%28W%5B2%5D%2A16%29%2F1\"\r\n" );
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document.write( "      84 = 16W2\r\n" );
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document.write( "Divide both sides by 8\r\n" );
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document.write( "      \"84%2F16\" = W2\r\n" );
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document.write( "      \"21%2F4\" = W2\r\n" );
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document.write( "The answer would be \"5%261%2F4\" workers. But since it's not nice to\r\n" );
document.write( "cut workers in fourths :), we have to use 6 workers. and get it\r\n" );
document.write( "done in less than 16 hours.\r\n" );
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document.write( "Edwin

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