document.write( "Question 705229: A tap fills a tank 12 hours other emptied it in 14 hour if both are open how much will take time to fill it.. \n" ); document.write( "
Algebra.Com's Answer #434471 by nerdybill(7384)\"\" \"About 
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A tap fills a tank 12 hours other emptied it in 14 hour if both are open how much will take time to fill it..
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\n" ); document.write( "Let x = time (hours) it takes to fill tank
\n" ); document.write( "then
\n" ); document.write( "x(1/12 - 1/14) = 1
\n" ); document.write( "multiplying both sides by (12)(14):
\n" ); document.write( "x(14 - 12) = (12)(14)
\n" ); document.write( "x(2) = 168
\n" ); document.write( "x = 84 hours
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