How long will it take a bus traveling at 60 mph to overtake a car traveling at 40 mph if the car had a 1.5 hour head start?
When the bus starts, the car is already 60 miles ahead (40 mph x 1.5 hours = 60 miles). If t = time in hours, the equation looks like this:Bus 60t = Car 40t + 60.Subtract 40t from each side20t = 60Divide both sides by 20t = 3 hours