The speedboat will go 90 miles in an hour.
What are the relations between time, speed and distance ?
Distance = Time x Speed.
Speed = (Distance/Time)
Time = (Distance/Speed)
Distance is the length we have travelled generally measured in kilo meters or in Miles.
Speed is the rate of change of position of an object with respect to time.
Time we all know what it is can in seconds, minutes, hour or in days.
In the given question
The speed boat travels 18 miles in 12 minutes
So, It will travel (18 x 60)/12 miles = 90 miles.
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