Can you please elaborate? This is as your question isn't very clear.
C.) Payroll records. These are the most extensive and data-intensive.
Answer:
Attached excel file containing formula for monthly cost of gas.
Explanation:
To find mileage note down readings at the star of month and at end of month.
Subtract end of month reading from start this will give you number of miles in month. Now as per mentioned in question, divide number of miles by average mpg and multiply by the price of a gallon of gas.
Here is your monthly cost of gas.
