Question

An individual travels 300 kilometres, part by scooter and part by bus. The speed of scooter is 40 km/h and the bus is 80 km/h. If the scooter covers 40% of the route, determine the approximate average speed of the entire trip.

A 20 km/h
B 67 km/h
C 40 km/h
D 79 km/h
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