Imagine you have a motorboat with a maximum water speed (the speed relative to the water it's floating on) of 18 miles per hour(mi/h). We make the trip upstream from our cabin to our cousins cabin, a distance of 18 miles running the boat at top speed all the way. The trip takes 1 hour ad 12 minutes. We would expect it to take exactly an hour if there were no current in the river, but the current we were fighting slowed us down. how fast was the river flowing? assume the river flowed at the same speed all during the trip.