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Difficulty—
Water is pumped into a partially filled tank at a constant rate through an inlet pipe. At the same time, water is pumped out of the tank at a constant rate through an outlet pipe. At what rate, in gallons per minute, is the amount of water in the tank increasing?
(1) The amount of water initially in the tank is \(200\) gallons.
(2) Water is pumped into the tank at a rate of \(10\) gallons per minute and out of the tank at a rate of \(10\) gallons every \(2\frac12\) minutes.
Answer: B
Source: Official Guide
(1) The amount of water initially in the tank is \(200\) gallons.
(2) Water is pumped into the tank at a rate of \(10\) gallons per minute and out of the tank at a rate of \(10\) gallons every \(2\frac12\) minutes.
Answer: B
Source: Official Guide
