Posted by tiffany on Sunday, October 28, 2012 at 12:51am.
Two pumps can fill a water tank in 256 minutes when working together. Alone, the second pump takes times as long as the first to fill the tank.
How many minutes would it take the first pump to fill the tank?

algebra  ?  Steve, Sunday, October 28, 2012 at 1:18am
? times as long?
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