document.write( "Question 396338: Fred can mow the lawn in 1 hour. John can mow the lawn in 2 hours. How long will it take them to mow the lawn together? \n" ); document.write( "
Algebra.Com's Answer #281168 by stanbon(75887)\"\" \"About 
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Fred can mow the lawn in 1 hour. John can mow the lawn in 2 hours. How long will it take them to mow the lawn together?
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\n" ); document.write( "Fred rate = 1 job/hr
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\n" ); document.write( "John rate = 1/2 job/hr
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\n" ); document.write( "Together rate = 1/x job/hr
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\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1 + 1/2 = 1/x
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\n" ); document.write( "Multiply by 2x to get:
\n" ); document.write( "2x + x = 2
\n" ); document.write( "3x = 2
\n" ); document.write( "x = 2/3 hr (time to do the job together)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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