John travels in an airplane a distance of 800 km. For half of the distance, the airplane flies at a speed of 900 km/h and for the rest of the distance, it flies at a speed of 760 km/h. How long does the trip take?
+36916 rate * time = distance
time = distance / rate
400km/900km/hr + 400km / 760/km/hr = total time (in hours)
