4)SIMPSON DRIVES HIS CAR WITH AN AVERAGE VELOCITY OF 48.0KM/H TO THE EAST. HOW LONG WILL IT TAKE HIM TO DRIVE 144KM ON A STRAIGHT HIGHWAY?
5)LOOK BACK AT QUESTION 4 . HOW MUCH TIME WOULD SIMPSON SAVE BY INCREASING HIS AVERAGEVELOCITY TO 56.0KM/H TO THE EAST?