You can put this solution on YOUR website! a speed boat travels 200km in 2hours 30 minutes.calculate its average speed in kilometers per hour
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200 km/2.5 hr = 80 km/hr
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Boats (and planes) use knots for speed, not km/hr.
80 km/hr = ~48 mph = ~42 knots.
Not "knots per hour", knots.
1 knot = 1 nautical mile per hour.
