document.write( "Question 981128: A tap can fill the tank in 16 minutes and another can empty in 8 minutes.If the tank is already half full and both the taps are opened together,the tank will be:
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document.write( "a. Filled in 12 minutes
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document.write( "b. Emptied in 12 min
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document.write( "c. Filled in 8 min
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document.write( "d emptied in 8 min
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document.write( "e. None of above \n" );
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Algebra.Com's Answer #602169 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "fill tap=1 tank/16 min=1/16 tank/min \n" ); document.write( "empty tap=-1tank/8 min=-1/8 tank/min \n" ); document.write( "Together=1/16 tank/min-1/8 tank/min=-1/16 tank min \n" ); document.write( ". \n" ); document.write( "With both valves open, 1/16 of the tank will empty per minute. \n" ); document.write( "Since 1/2 (8/16) of the tank is full at the start, it will take (8/16 tank/(1/16 tank/min)) 8 minutes for the tank to empty. \n" ); document.write( ". \n" ); document.write( "Correct answer is D. emptied in 8 minutes. \n" ); document.write( " |