Moving at a speed of 36 km / h, the motorcyclist traveled from point A to point B

Moving at a speed of 36 km / h, the motorcyclist traveled from point A to point B in 0.5 hours. How long will it take him to return at a speed of 54 km / h.

Initial data: V1 (speed of the motorcyclist from point A to point B) = 36 km / h; t1 (travel time from point A to point B) = 0.5 h; V2 (speed of the biker on the way back) = 54 km / h.

1) Calculate the distance between these points:

S = V1 * t1 = 36 * 0.5 = 18 km.

2) Let’s calculate the time required for the motorcyclist for the return journey:

S = V2 * t2 and t2 = S / V2 = 18/54 = 0.333 hours or 20 minutes.

Answer: The motorcyclist will need 20 minutes on the way back.