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Physics, 28.06.2021 18:20 zaiinab

A car travels first 30 km at a uniform speed of 20 km /hr and went 30 km at a uniform speed of 40 km/hr
Find its average speed in km/hr

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A car travels first 30 km at a uniform speed of 20 km /hr and went 30 km at a uniform speed of 40 k...

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