Mathematics, 19.05.2020 03:09 shannydouglas

Two cars are doing a race around a 20-km track. They start from the same place at the same time. The speed of first car is 60 km/h, speed of second car is 80 km/h. How long will it take second car to lap the first car?

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Two cars are doing a race around a 20-km track. They start from the same place at the same time. The...