document.write( "Question 938806: One pipe can fill a swimming pool in 8 hours. Another pipe takes 12 hours. How long will it take to fill the pool if both pipes are used simultaneously? \n" ); document.write( "
Algebra.Com's Answer #571963 by ewatrrr(24785)\"\" \"About 
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Per hour KEY
\n" ); document.write( "\"1%2F8+%2B+1%2F12+=+1%2Fx\" |Multiplying thru by 24x so as all denominators = 1
\n" ); document.write( "3x + 2x = 24
\n" ); document.write( "5x = 24
\n" ); document.write( "x = 24/5 = 5.8 hr
\n" ); document.write( "and... checking
\n" ); document.write( "\"5%2F24+=+1%2F%2824%2F5%29\"
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