Answer the question based on the information given below:
Cities A and B are in different time zones. A is located 3000 km east of B. The table below describes the schedule of an airline operating non-stop flights between A and B. All the times indicated are local and on the same day.
Departure |
Arrival |
||
City |
Time |
City |
Time |
B |
8:00 am |
A |
3:00 pm |
A |
4:00 pm |
B |
8:00 pm |
Assume that planes cruise at the same speed in both directions. However, the effective speed is influenced by a steady wind blowing from east to west at 50 km per hour.
Question: What is the plane’s cruising speed in km per hour?