Math, asked by sm5222760, 2 months ago

A train travels at a speed of 57 km/h for an hour and at a speed of 64 km/h for the next 3 hours. Find the average speed of his journey for 7 hours.

Answers

Answered by jiyakumavat

0

Answer:

67 km

Step-by-step explanation:

is the correct answer

Answered by jm03041983

0

Step-by-step explanation:

7 hr the average speed =(57+64*3+57+64*2)/7 = 62 km

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