Answer:

Step-by-step explanation:
Given

Required
Determine the mean
The mean of a data is calculated as thus:

In this case:

So, the formula becomes:



Answer:
20.25 miles
Step-by-step explanation:
If your car travels 27 miles on a full tank of gas, then your car will travel
miles on
tank of gas.

I hope this helped!
He will only need to sell one