Answer the question

The mathematical model for calculating speed is shown below. Speed = distance/time. An airplane traveled 700 kilometers in two hours during a trip. What was the average speed of the plane during the trip?
Choose from:
(i) 5.8 kilometers per hour;
(ii) 350 kilometers per hour;
(iii) 1400 kilometers per hour;
(iv) 84,000 kilometers per hour;
(ii)