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Two boats are a the centre of a lake. At time t = 0, one boat...

Two boats are a the centre of a lake. At time t = 0, one boat begins travelling south at 40 km/hr. Then, 75 minutes later, the other boat takes off, heading east at a speed of 48 km/hr. At what rate is the distance between them increasing at t = 1.5 hr? Round your answer to two decimal places.

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