Question

A train travels at a speed of 60 km/h for 0.5 h, at 30 km/h for the next 0.2 h and then at 70 km/h for the next 0.7 h. What is the average speed of the train?
(A) Approximately 40 kmph
(B) Approximately 50 kmph
(C) Approximately 60 kmph
(D) Approximately 70 kmph
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Answer 1

Answer:

aprroximately 7o km per hr