So one day you come in at 8:00, the next day 40 minutes later at 8:40, the next day 40 minutes later at 9:20, the next day at 10:00.
Dakle, jednog dana dođete u u 8:00, sutradan 40 minuta kasnije u 8:40, Idući dan 40 minuta kasnije u 9:20, dan nakon toga u 10:00.