document.write( "Question 314417: Jack mows the lawn in 3 hours. Jane mows the same yard in 4 hours. If they worked together how much time would it take them to mow the yard? \n" ); document.write( "
Algebra.Com's Answer #224792 by rapaljer(4671)\"\" \"About 
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Let x = time it takes them to mow the yard working together. This means that in 1 hour, Jack can mow 1/3 of the yard, Jane can mow 1/4 of the yard, and working together, they can do 1/x of the yard.\r
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\n" ); document.write( "\n" ); document.write( "The equation is
\n" ); document.write( "\"1%2F3%2B1%2F4=1%2Fx\"\r
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\n" ); document.write( "\n" ); document.write( "The LCD is 12x, so multiply both sides of the equation by 12x
\n" ); document.write( "\"12x%2A%281%2F3%29%2B12x%2A%281%2F4%29=12x%2A%281%2Fx%29\"
\n" ); document.write( "\"4x%2B3x=12\"
\n" ); document.write( "\"7x=12\"
\n" ); document.write( "\"x=12%2F7\" hours (a little less than 2 hours working together.\r
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\n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired
\n" ); document.write( "Seminole State College of Florida
\n" ); document.write( "Altamonte Springs Campus
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