To start to find the fraction of the difference that the ferry traveled in one hour, we should look at what information we have now. The equation, so far, is that:
distance = 
hour
Since we want to find the distance traveled by the ferry in one hour, we need to multiply by the reciprocal of the fraction in front of the hours, which means we need to multiply both sides by
. Doing this, wee get that the ferry traveled 
of the distance in one hour.
Since we want to find the distance traveled by the ferry in one hour, we need to multiply by the reciprocal of the fraction in front of the hours, which means we need to multiply both sides by