1.

Devki rides his scooter 10km at an average speed of 10 km/hr and again travels 30km at an average speedof 15 km/hr. What is her average speed for the entire trip approximately?

A. 13.33 Km/hr
B. 15 Km/hr
C. 20 Km/hr
D. 10 Km/hr
Answer» B. 15 Km/hr


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