Darren is playing board game. a move forward is a positive value. A move backward is a negative value. He wrote an inequality correctly comparing two of his move. what is inequalities that could be the inequality Darren wrote

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?