document.write( "Question 1055416: A tank is filled with 2 pipes. The first pipe can fill the tank in 10 hrs. But after it has been opened for 3 1⁄2 hours, the second pipe is opened and the tank is filled up in 4 hours more. How long would it take the second pipe alone to fill the tank? The two pipes have different diameters. \n" ); document.write( "

Algebra.Com's Answer #670629 by josgarithmetic(39617) $\"\"$ $\"About$

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document.write( "PIPE           RATE (TANKSWORTH/HOURS)     TIME       VOLUME\r\n" );
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document.write( "First          1/10                        3&1/2      (1/10)(3&1/2)\r\n" );
document.write( "Second         1/x\r\n" );
document.write( "Combined      1/10+1/x                     4          4((1/10)+1/x)\r\n" );
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\n" ); document.write( "\n" ); document.write( "Examine the tabulated description for a few minutes. \r
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\n" ); document.write( "\n" ); document.write( "First pipe filled some of the tank volume during 3&1/2 hours and then BOTH pipes continued to fill the rest of the tank's volume for 4 hours. This was filling of the whole 1 tank volume.\r
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