The patient attends physiotherapy procedures at the clinic every day. Every morning he leaves the house at the same time and moves at a constant velocity 2,5 km/h. Once, leaving the house on time, the patient, on the 1/2 part of the way, remembered that he had forgotten the documents at home and decided to return home. How fast does the patient have to move in order to be in time for the beginning of the procedure? Please enter the correct units of measurement.

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