A small pipe can fill a tank in 9 min more time than it takes a larger pipe to fill the same tank. Working together, the pipes can fill the tank in 6 min. How long would it take each pipe, working alone, to fill the tank?
Let t be the time for the larger pipe to fill the tank, then (t + 9) be the time for the smaller pipe to fill the tank.
In order to find the time of each pipe to fill t...
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