As a parking attendant, Baram earns a fixed salary for the first 15 hours he works each week and an additional pay for any time over 15 hours. During the first week, Baram worked 25 hours and earned 720000 D: the second week, he worked 22.5 hours and earned 641250 D. What is Baram's weekly salary and what is the overtime pay per hour? Solve using the elimination method