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26-04-2024
Physics

Answered

A train covers the first 5km of its journey at a speed of 30km/hrand the next 15km at a speed of 45km/hr. What is the average speed of the train?

a. 35km/hr
b. 39.5km/hr
c. 37.5km/hr
d. 40km/hr

Answer :

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