document.write( "Question 616519: It takes Andrew 4 hours to clean the kitchen at camp. Daniel can do it in 3 hours.
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Algebra.Com's Answer #387727 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "takes Andrew 4 hours to clean the kitchen at camp. Daniel 3hrs...
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document.write( "How long  will it take them to clean it if they work together?
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document.write( "Note:  PER hour is the Key
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document.write( "  1/4 + 1/3 = 1/x     |Multiplying thru by 12x so as all denominators = 1
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document.write( "   3x+ 4x = 12
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document.write( "   7x = 12
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document.write( "    x = 12/7 hr \n" );
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