Carl drove from his home to the beach at an average speed of 50 mph and returned home along the same route at an average speed of 30 mph. His total driving time for the trip was 2 hours. Solving which of the following systems of equations yields, x, the time it took for Carl to drive to the beach and, y, the time spent for the return trip?

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A) x = y + 2 50x = 30y B) x+y=2 30x = 50y C) x+y=2 50x = 30y D) y=x+2 30x = 50y