document.write( "Question 1201657: A farmer can plow a field in 24 hours. His son, with a larger plow, can plow it in 12 hours. The farmer asked that they work together so they could finish before the rain started. It rained 7 hours later. Had they finished plowing before the rain? \n" ); document.write( "

Algebra.Com's Answer #836126 by ikleyn(52778) $\"\"$ $\"About$

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\n" ); document.write( "A farmer can plow a field in 24 hours. His son, with a larger plow,
\n" ); document.write( "can plow it in 12 hours. The farmer asked that they work together
\n" ); document.write( "so they could finish before the rain started. It rained 7 hours later.
\n" ); document.write( "Had they finished plowing before the rain?
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document.write( "The farmer's rate of work is    of the job per hour.\r\n" );
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document.write( "His son's rate of work is    of the job per hour.\r\n" );
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document.write( "Their combined rate of work is the sum\r\n" );
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document.write( "     +  =  +  =  =   of the job per hour.\r\n" );
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document.write( "In 7 hours, they will complete only    of the job - not the entire job.\r\n" );
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document.write( "ANSWER.  They will not complete the job in 7 hours - it requires 8 hours.\r\n" );
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