Homework Help: Math

Posted by Emileigh on Tuesday, January 11, 2011 at 9:29pm.

Using my faucet, it takes 6 minutes to fill our water tank. Using my neighbor's hose, it takes 9 minutes. How long would it take if i used both the faucet and the hose?

Math - joey, Sunday, February 13, 2011 at 12:57pm
3 minutes 36 seconds. but i dont know why
Math - Anonymous, Sunday, May 5, 2013 at 5:39pm
1/6 + 1/9 = x
3/18 + 2/18 = x
x = 5/18 * 1
x = 18/5
x = 3.6 minutes

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