Compare the motion of two humpback whales. Which humpback whale was moving at a higher speed?

 - a humpback whale that moved 55kilometers in 10hours
 - a humpback whale that moved 85kilometers in 10hours
Look at the distance each humpback whale moved and the time it took to move that distance.
One humpback whale moved 85 kilometers in 10 hours.
The other humpback whale moved 55 kilometers in 10 hours.
Notice that each humpback whale spent the same amount of time moving. The humpback whale that moved 85 kilometers moved a farther distance in that time. So, that humpback whale must have moved at a higher speed.