document.write( "Question 389578: 16. A small hose running alone can fill a tank in 20 minutes, and a larger hose running alone can fill the same tank in 12 minutes.
\n" ); document.write( "(a) What fraction of the tank is filled by each hose running alone in one minute?
\n" ); document.write( "(b) What fraction is filled by both hoses running together for one minute?
\n" ); document.write( "(c) How many minutes will it take both hoses working together to fill up the tank?\r
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Algebra.Com's Answer #276107 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
a) If a hose can fill a tank in 20 minutes, then it can fill \"1%2F20\" of the tank in 1 minute.
\n" ); document.write( "If a hose can fill a tank in 12 minutes, then it can fill \"1%2F12\" of the tank in 1 minute.
\n" ); document.write( "Do you see the pattern here?
\n" ); document.write( "b) If both hoses are running for 1 minute, then just add the rate/minute for each hose.
\n" ); document.write( "\"%281%2F20%29%2B%281%2F12%29+=+%283%2F60%29%2B%285%2F60%29\"=\"8%2F60+=+0.133\"minutes.
\n" ); document.write( "c)If both hoses are running together, then the rate per minute is \"8%2F60+=+2%2F15\" so \"2%2F15\" of the tank will be filled in 1 minute.
\n" ); document.write( "So it will take \"15%2F2+=+7.5\" minutes to fill the tank.
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