Two jets are flying towards each other from airports that are 1200 km apart. One jet is flying at 250 km/h and the other jet at 350 km/h. If they took off at th

Question

 Full question:  Two jets are flying towards each other from airports that are 1200 km apart. One jet is flying at 250 km/h and the other jet at 350 km/h. If they took off at the same time, how long will it take for the jets to pass each other?

Answer 1

the total velocity at which the planes are approaching each other is 350 + 250 = 600 km/h

 

Since time = distance/velocity,  time = 1200km/ 600 km/h = 2 hours.