Question

A man travelled a total distance of 360 km. He travelled first 280 km on car with a speed of 25 km/h and rest of the distance on bike whose speed is 15 km/h less than that of the car. Find his average speed for the whole journey.

A 10.75 km/h
B 16.75 km/h
C 18.75 km/h
D 17.75 km/h
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