document.write( "Question 550478: Gary Egan needs to drain his 18,000-gallon inground swimming pool to have it resurfaced. He uses 2 pumps to drain the pool. One drains 5 gallons of water a minute while the other drains 25 gallons of water a minute. If the pumps are turned on at the same time and remain on until the pool is drained, bow long wil it take for the pool to be drained?\r
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document.write( "The time required to drain the water from the pool is ____minutes.
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document.write( "(Type an integer or a decimal.) \n" );
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Algebra.Com's Answer #358884 by ptaylor(2198)![]() ![]() You can put this solution on YOUR website! Let t=time required to drain the pool with both pumps working \n" ); document.write( "Together pump1 and pump2 drains at the rate of 25+5=30 gal/min \n" ); document.write( "So, our equation to solve is: \n" ); document.write( "30*t=18000 \n" ); document.write( "t=600 min\r \n" ); document.write( "\n" ); document.write( "CK \n" ); document.write( "In 600 min, pump1 drains 5*600=3000 gal \n" ); document.write( "In 600 min pump2 drains 25*600=15000 gal \n" ); document.write( "15000+3000=18000\r \n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor \n" ); document.write( " |