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A car travels 30 km at uniform speed of 40km per hour and the next 30 km at a uniform speed of 20 km per hourfind its average speed?
Wiki User
∙ 13y ago
First 30k takes 45 min, second 30k takes 90 min, total 60k in 2¼ hours so average speed = 60 x 4/9 = 26 and 2/3 kph
Wiki User
∙ 13y ago
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