document.write( "Question 56498This question is from textbook Algebra for College Students
\n" ); document.write( ": 54. If two inlet pipes are both open, they can fill a pool in 1 hour and 12 minutes. One of the pipes can fill the pool by itself in 2 hours. How long would it take the other pipe to fill the pool by itself? \n" ); document.write( "
Algebra.Com's Answer #38341 by stanbon(75887)\"\" \"About 
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If two inlet pipes are both open, they can fill a pool in 1 hour and 12 minutes. One of the pipes can fill the pool by itself in 2 hours. How long would it take the other pipe to fill the pool by itself?
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\n" ); document.write( "Pipes together DATA:
\n" ); document.write( "time to fill = 72 min/job ; rate = 1/72 job/min
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\n" ); document.write( "One pipe alone DATA:
\n" ); document.write( "time to fill = 120 min/job ; rate = 1/120 job/min
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\n" ); document.write( "2nd pipe alone DATA:
\n" ); document.write( "time to fill = x min/job ; rate = 1/x job/min
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\n" ); document.write( "EQUATION:
\n" ); document.write( "one pipe rate + other pipe rate = together rate
\n" ); document.write( "1/120 + 1/x = 1/72
\n" ); document.write( "(x+120)/120x = 1/72
\n" ); document.write( "120x= 72x+8640
\n" ); document.write( "48x=8640
\n" ); document.write( "x=180 minutes
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\n" ); document.write( "2nd pipe alone would take 180 min or 3 hours to fill the pool.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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