Compare the motion of two motorboats. Which motorboat was moving at a higher speed?

 - a motorboat that moved 180kilometers in 5hours
 - a motorboat that moved 340kilometers in 5hours
Look at the distance each motorboat moved and the time it took to move that distance.
One motorboat moved 340 kilometers in 5 hours.
The other motorboat moved 180 kilometers in 5 hours.
Notice that each motorboat spent the same amount of time moving. The motorboat that moved 340 kilometers moved a farther distance in that time. So, that motorboat must have moved at a higher speed.