document.write( "Question 900492: If can A can fill a tank of water in 8 hours and can b can fill that same tank in 5 hours. How long doesit ttake the two pumps working together to fill the tank? \n" ); document.write( "
Algebra.Com's Answer #545977 by JulietG(1812)\"\" \"About 
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A takes 8 hours for 1 tank
\n" ); document.write( "B takes 5 hours for 1 tank
\n" ); document.write( "That means it takes them 13 hours to fill 2 tanks together.
\n" ); document.write( "Divide by 2 to get 1 tank average.
\n" ); document.write( "13/ 2 = 6.5
\n" ); document.write( "Now divide by 2 again since they are filling it together.
\n" ); document.write( "6.5/2 = 3.25 hours
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