6. A car travels 20km. at a uniform speed of 40km/hr and next 20km, at a speed of
30km/hr. Find the average speed. (Ans: 34.2 km/hr)
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Answer:
avg speed = total distance /total time
= (20 + 20)/(0.5 + 0.67)
= 40/ 1.17
= 34.188 km/h
hope you got your answer
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