Mach is an average of 768 miles per hour. 85% means 85/100 = 0.85 multiply this times 768 mph 0.85 * 768 mph = 652.8 miles per hour
In 768 In 768 In 768
880
80 + 32 + 69 + 220...
880-915 km/h
Half of 880= 880/2= 440
60% of 880= 60% * 880= 0.6 * 880= 528
45% of 880 = 45% * 880 = 0.45 * 880 = 396
880
768
768 + 5 = 773
880