Question

A train at a speed of 50 km h-¹ for 30 minutes , 40 kmh-¹ for the next 15 minutes and then 60 kmh-¹ for the next 60minutes. Calculate the average speed of the car




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Answer 1

Explanation:

50*1/2+40*1/4+60*1/1 / 1/2+1/4+1/1

25+10+60/1/2+1/4+1/1

95/7/4

95*4/7

380/7

56.28