document.write( "Question 845064: it takes John three times as long to clean an office building as Lisa. If they work together, it takes 6 hours to clean. How long does it take Lisa by herself?\r
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Algebra.Com's Answer #509124 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( "John three times as long to clean an office building as Lisa's time
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document.write( "     |Multiplying thru by 6x so as all denominators = 1
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document.write( "   2 + 6 = x
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document.write( "    8 = x, time it takes Lisa alone. \n" );
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