Hard? This is EASY.
Ok lets first find the basiccosts
5000(car)+4800(insurance over 4 years)1600(insurance over 4 years)=11400.
Ok, in total you will be driving 40,000 miles. 40,000 divided by 25 (how much gallons you need/have)=1600. You will need 1600 gallons.
1600x4(price per gallon) is 6400.
gas is 6400 dollars.
Next add up the costs 11400+6400=17800
Now divide your total cost by the 40,000 miles you will be driving.
17800 divided by 40,000 is .445
This isn't really valid, but it is a math question, so 44 and a half cents per mile.