document.write( "Question 711800: Hi. My name is Allen and I've been having difficulty with this problem. I sent this equation to this website a few days ago but no response. I came up with 7/9 hours, which is incorrect. Here is the equation:\r
\n" ); document.write( "\n" ); document.write( " A swimming pool can be filled by either or both of two pipes of different diameters. It takes the smaller pipe twice the time that the larger pipe takes to fill the pool. If water flows through both pipes it take 2 1/3 hours to fill the pool. How long will it take the larger pipe to fill the pool? [hint: let x be the amount of the pool filled by the small pipe in one hour]\r
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Algebra.Com's Answer #437624 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
I'm going to make x = time it takes larger pipe to fill the pool on its own.\r
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\n" ); document.write( "\n" ); document.write( "2 1/3 = 2+1/3\r
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\n" ); document.write( "\n" ); document.write( "2 1/3 = 6/3 + 1/3\r
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\n" ); document.write( "\n" ); document.write( "2 1/3 = 7/3\r
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\n" ); document.write( "\n" ); document.write( "1/x + 1/(2x) = 1/(7/3)\r
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\n" ); document.write( "\n" ); document.write( "2/(2x) + 1/(2x) = 3/7\r
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\n" ); document.write( "\n" ); document.write( "3/(2x) = 3/7\r
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\n" ); document.write( "\n" ); document.write( "3*7 = 3*2x\r
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\n" ); document.write( "\n" ); document.write( "21 = 6x\r
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\n" ); document.write( "\n" ); document.write( "6x = 21\r
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\n" ); document.write( "\n" ); document.write( "x = 21/6\r
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\n" ); document.write( "\n" ); document.write( "x = 7/2\r
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\n" ); document.write( "\n" ); document.write( "So it will take 7/2 hours or 3.5 hours for the larger pipe to fill the pool on its own.
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