A power boat travels down the St. Lawrence River from Montreal to Quebec City at full throttle. The trip takes 3.0 h. The boat then heads back to Montreal, again at full throttle. This time the trip takes 15 h. With no gas left, the boat drifts with the current back to Quebec City. How long does the third trip take?
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A power boat travels down the St. Lawrence River from Montreal to Quebec City at full throttle. The...
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