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

 - a motorboat that moved 440miles in 10hours
 - a motorboat that moved 430miles in 10hours
Look at the distance each motorboat moved and the time it took to move that distance.
One motorboat moved 440 miles in 10 hours.
The other motorboat moved 430 miles in 10 hours.
Notice that each motorboat spent the same amount of time moving. The motorboat that moved 440 miles moved a farther distance in that time. So, that motorboat must have moved at a higher speed.