Question 532401
A boat can go downstream at the rate of 25 Kilometers per hour.  It can return against the current at only 8 kilometers per hour.  Find the rate of the current and the boat.
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The boat's speed is the average = (25 + 8)/2 = 16.5 km/hr
The current is the difference = 25 - 16.5 = 8.5 km/hr