document.write( "Question 964754: Two tanks are connected to a dam by separate pipes.To fill the tanks the valves on the pipes are opened at the same time.Tank A contains 100 litres when valve A is opened and water is allowed in at a rate of 20litres per minute.Tank B is empty when the valve B is opened and water goes in at 45litres per minute. Find out how long it takes before the two tanks contain equal volumes of water.(draw a diagram of the tanks). \n" ); document.write( "
Algebra.Com's Answer #589608 by ankor@dixie-net.com(22740)\"\" \"About 
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Two tanks are connected to a dam by separate pipes.
\n" ); document.write( "To fill the tanks the valves on the pipes are opened at the same time.
\n" ); document.write( " Tank A contains 100 litres when valve A is opened and water is allowed in at a rate of 20litres per minute.
\n" ); document.write( " Tank B is empty when the valve B is opened and water goes in at 45litres per minute.
\n" ); document.write( " Find out how long it takes before the two tanks contain equal volumes of water.(draw a diagram of the tanks).
\n" ); document.write( ":
\n" ); document.write( "let t = time for this to happen
\n" ); document.write( "B amt = A amt
\n" ); document.write( "45t = 20t + 100
\n" ); document.write( "45t - 20t = 100
\n" ); document.write( "25t = 100
\n" ); document.write( "t = 100/25
\n" ); document.write( "t = 4 minutes both tanks have the same amt
\n" ); document.write( ";
\n" ); document.write( ":
\n" ); document.write( "Confirm this
\n" ); document.write( "4*45 = 180 liter
\n" ); document.write( "4(20) + 100 = 180 liters
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