document.write( "Question 964600: Nine pumps can empty a tank in 12 hours how long will it take 8 pumps to empty it?\r
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\n" ); document.write( "Marcell
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Algebra.Com's Answer #589495 by Alan3354(69443)\"\" \"About 
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Nine pumps can empty a tank in 12 hours how long will it take 8 pumps to empty it?
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\n" ); document.write( "The job takes 9*12 pump-hours = 108 pump-hr
\n" ); document.write( "108 pump-hr/8 pumps = 13.5 hours
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\n" ); document.write( "9*12 = 8*t
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