Let's Get Some Rest

Algebra Level 3

When going to the beach, Guilherme takes \(2\) hours on the road to go from his city to the beach and \(3\) hours to get back to his city. Knowing that Guilherme's car goes at \(100\) km/h when downhill, \(80\) km/h on plane surfaces and \(60\) km/h uphill, and that there are only \(8\) kilometers of road on plane surface, what is the distance in kilometers between the city and the beach?

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