document.write( "Question 274541: A pool can be filled in 12 hours if water enters through a pipe alone or in 30 hours if water enters through a hose alone. If water is entering through the pipe and the hose, how long will it take to fill the pool? \n" ); document.write( "
Algebra.Com's Answer #200327 by richwmiller(17219)\"\" \"About 
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x/12+x/30=1
\n" ); document.write( "5x+2x=60
\n" ); document.write( "7x=60
\n" ); document.write( "x=60/7=8.57 hrs
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