awhetzell5214 awhetzell5214 18-01-2024 Mathematics contestada A plane left 30 minutes later than the scheduled time and in order to reach the destination 1500 km away in time, it had to increase the speed by 250 km/h from the usual speed. Find its usual speed.A. 720 km/hB. 740 km/hC. 730 km/hD. 750 km/h