document.write( "Question 1095687: Two hoses, when connected to a swimming pool,can fill the pool together in 4 hours. If the larger hose alone is used, it can fill the pool in 6 hours less than the smaller hose. How long will it take the smaller hose to fill the swimming pool alone? \n" ); document.write( "
Algebra.Com's Answer #710242 by ankor@dixie-net.com(22740)\"\" \"About 
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Two hoses, when connected to a swimming pool, can fill the pool together in 4 hours.
\n" ); document.write( " If the larger hose alone is used, it can fill the pool in 6 hours less than the smaller hose.
\n" ); document.write( " How long will it take the smaller hose to fill the swimming pool alone?
\n" ); document.write( ":
\n" ); document.write( "Let s = time required by the small hose to fill the pool alone
\n" ); document.write( "then
\n" ); document.write( "(s-6) = time required by the large hose
\n" ); document.write( ":
\n" ); document.write( "Let the completed job = 1 (a full pool)
\n" ); document.write( ":
\n" ); document.write( "Each hose does a fraction of the job, the two fractions add up to 1
\n" ); document.write( "\"4%2F%28%28s-6%29%29\" = \"4%2Fs\" = 1
\n" ); document.write( "multiply equation by s(s-6)
\n" ); document.write( "s(s-6)*\"4%2F%28%28s-6%29%29\" = s(s-6)*\"4%2Fs\" = 1s(s-6)
\n" ); document.write( "Cancel the denominators and you have
\n" ); document.write( "4s + 4(s-6) = s^2 - 6s
\n" ); document.write( "4s + 4s - 24 = s^2 - 6s
\n" ); document.write( "8s - 24= s^2 - 6s
\n" ); document.write( "arrange as a quadratic equation
\n" ); document.write( "0 = s^2 - 6s - 8s + 24
\n" ); document.write( "s^2 - 14s + 24 = 0
\n" ); document.write( "Factors to
\n" ); document.write( "(s-12)(s-2) = 0
\n" ); document.write( "two solutions
\n" ); document.write( "s = 2
\n" ); document.write( "and the reasonable solution
\n" ); document.write( "s = 12 hrs is time required to fill the pool with the small hose
\n" ); document.write( ":
\n" ); document.write( "the large hose takes 6 hrs less, therefore
\n" ); document.write( "6 hrs is the time required by the large hose
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\n" ); document.write( ":
\n" ); document.write( "See if that checks out
\n" ); document.write( "\"4%2F6\" + \"4%2F12\" =
\n" ); document.write( "reduce fractions
\n" ); document.write( "\"2%2F3\" + \"1%2F3\" = 1
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