Question

5. A car covers first 100 km of his journey at 50 km/h, next 50 km at 40 km/h and last 75 km in 5/4
Find the average speed of the whole journey.
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Answer 1

Answer:

hey here is your answer

Step-by-step explanation:

Given :- A car covers 100km at speed of 50km/hr

Next at 50km at speed of 40km /hr

And 75 km in 5/4 hours.

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To find :- Average speed of whole journey

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=> Average Speed = Total distance / Total time

=>Average speed= (100 + 50 +75) / { (100 / 50) + (50 / 40) + 5/4}

=> Average speed= [(225) / (4.5)]

=> Average speed= 2250 / 45

=> Average speed = 50 km/ hr

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So the average speed of whole journey is 50 km/hr

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Hope it helps!

Answer 2

Step-by-step explanation:

50km / hr is speed of journey

hope it helps