conversion of speed

A boat has travelled 125km in 7hrs 45min. Calculate the speed of this boat in knots. (1knot= 1 nautical mile per hour):
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1 Answer

distans=125 km

time=7ours +45 min...7.75 ours

speed=distans/time=125/7.75=16.12903226 km/our

or bout 16

"knots"=see-mile/our

1 km=0.539594 see-mile

125km= 67.44925 see-mile

speed=8.703129 "knots"
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