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A car and a motorcycle move in the same direction by the same highway. At the beginning, the distance between them is 105 km. The car driver maintains an average speed of 90 km/h. What is the average speed of the motorcyclist, if the car driver caught up with him in 3 hours?

Respuesta :

altavistard
Car:  distancec = 105 km + (90 km/hr)(3 hrs)

Cycle:  distancem = ratem(3 hrs)

Equate these 2 distances:  105 km + 270 km = ratem(3 hrs)

Then 375 km / 3 hrs = ratem = 125 km/hr    (average speed of the motorcyclist)

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