document.write( "Question 970273: Working alone, one builder can frame a room addition in 12 hours. Another, more experience builder, can do the same job only in 8 hours. How long would it take them to frame the room addition of they work together? Answer with a complete sentence. Use a mixed number in your answer. \n" ); document.write( "

Algebra.Com's Answer #592935 by AnlytcPhil(1810) $\"\"$ $\"About$

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Working alone, one builder can frame a room addition in 12 hours. Another, more experience builder, can do the same job only in 8 hours. How long would it take them to frame the room addition of they work together? Answer with a complete sentence. Use a mixed number in your answer.
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document.write( "Without using algebra:\r\n" );
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document.write( "The least common multiple of 12 hours and 8 hours is 24 hours.\r\n" );
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document.write( "If they worked together for 24 hours, the first builder would have framed\r\n" );
document.write( "2 rooms and the more experienced builder would have framed 3 rooms.  \r\n" );
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document.write( "Therefore, together they could have framed 5 rooms in 24 hours, or 1 room in\r\n" );
document.write( "1/5th of 24 hours or 1/5 times 24 hours or  or  hours.\r\n" );
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document.write( "Edwin

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