document.write( "Question 839595: A tap X and Y can fill up an empty tank in 15 and 12 hours respectively. another tap z can empty the full tank in 8 hours. if all the tap turned together at the same time, in how many hours will the tank be full? \n" ); document.write( "
Algebra.Com's Answer #505758 by josgarithmetic(39620)\"\" \"About 
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Find the rate of filling, as tankfulls per hour.
\n" ); document.write( "\"1%2F15%2B1%2F12-1%2F8\"
\n" ); document.write( "LCD is 2*2*2*3*5
\n" ); document.write( "\"8%2F120%2B10%2F120-15%2F120\"
\n" ); document.write( "\"3%2F120\"
\n" ); document.write( "\"highlight_green%281%2F40%29\", tanks per hour.\r
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\n" ); document.write( "\n" ); document.write( "Uniform rate equation for filling the tank is \"%281%2F40%29%2At=T\"
\n" ); document.write( "t = time in hours
\n" ); document.write( "T = how many or how much tank to fill
\n" ); document.write( "You are interested in filling 1 tank, so T=1.
\n" ); document.write( "Specific equation to solve is \"highlight%28%281%2F40%29t=1%29\"; solve for t.
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