Answer:
- a.

- b.

Step-by-step explanation:
The average speed is :

Now, how many seconds are in 10 months? We know that there are 31 days in seven months (January, March, May, July, August and October), 30 days in three months ( April, June and September) and 28 days in February. This gives us:


Now, in every day there are 24 hours. So, the total number of hours will be:


So, the speed will be:


To convert this to m/s we can use the conversion factors:

