document.write( "Question 389012: 1. A full bathtub will empty at an average rate of 10 minutes. It will fill up to full at an average rate of 8 minutes if the plug is in. How long will it take to fill up to full if the plug is removed and the tap is turned on?
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Algebra.Com's Answer #275496 by mananth(16946)\"\" \"About 
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A full bathtub will empty at an average rate of 10 minutes. It will fill up to full at an average rate of 8 minutes if the plug is in. How long will it take to fill up to full if the plug is removed and the tap is turned on?\r
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\n" ); document.write( "filling 8 minutes
\n" ); document.write( "1/8 of the job in 1 minute.
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\n" ); document.write( "emptying 10 minutes
\n" ); document.write( "1/10 of this job in 1 minute.
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\n" ); document.write( "1/8 -1/10 = effective filling in 1 minute
\n" ); document.write( "LCD = 40
\n" ); document.write( "(5-4)/40=1/40 of the job of filling in 1 minute.
\n" ); document.write( "So when plug is open it will take 40/1 minutes
\n" ); document.write( "40 minutes to fill the tub.
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\n" ); document.write( "m.ananth@hotmail.ca
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