A horizontal water pipe has a coupling in the middle that halves the cross-sectional area. Water enters the wider end of the pipe at a rate of 25 gallons/s (1 gal = 0.003785 m3). Assuming ideal conditions are met, what is the rate of water discharge at the narrow end of the pipe? O 6.25 gallons/s O 50 gallons/s O 25 gallons/s O 12.5 gallons/s

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