document.write( "Question 768883: A tank takes 10 hours to fill through a inlet pipe. It takes three times as long to empty through an outlet pipe. How long would it take to fill if both pipes are open? The size is not specified. And it's not a trick question either. \n" ); document.write( "

Algebra.Com's Answer #468540 by ramkikk66(644) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "It's not a trick question and it can be solved.
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document.write( "Inlet pipe takes 10 hours to fill tank.
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document.write( "So in one hour, it fills 1/10 of the tank
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document.write( "Outlet pipe takes 3 times as long i.e. 3* 10 = 30 hours to empty tank.
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document.write( "So in one hour, it empties 1/30 of the tank
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document.write( "If both are open, in one hour
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document.write( "1/10 of the tank is filled and 1/30 is emptied.
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document.write( "So volume of water remaining in tank = 1/10 - 1/30 = 2/30 = 1/15 of the tank.
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document.write( "That is, if both the inlet and outlet are open, 1/15 of the tank gets filled
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document.write( "every hour.
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document.write( "So time taken to fill the whole tank = 15 hours!\r
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document.write( "Hope you got it :)\r
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