document.write( "Question 286490: 1.Pipe A can fill a tank in 30 minutes. Pipe B can feel the same tank in 20 minutes. How long will it take to fill the tank using both pipes at the same time?\r
\n" ); document.write( "\n" ); document.write( "NOTE:( can you please show the work or somehow explain them so i can understand how to do it..thank you)
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Algebra.Com's Answer #207787 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Pipe A can fill a tank in 30 minutes. Pipe B can feel the same tank in 20 minutes. How long will it take to fill the tank using both pipes at the same time?
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\n" ); document.write( "A rate: 1/30 tank/min
\n" ); document.write( "B rate: 1/20 tank/min
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\n" ); document.write( "Together rate: 1/x tank/min
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\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1/30 + 1/20 = 1/x
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\n" ); document.write( "Multiply thru by 60x and solve for \"x\":
\n" ); document.write( "2x + 3x = 60
\n" ); document.write( "5x = 60
\n" ); document.write( "x = 12 minutes (time to fill the tank using both tanks)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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