Answer:
Jan would have to put 4.5 liters of diesel In her new car.
Explanation:
to answer this question and show your work you will need to know how to do simple long division and dividing with decimals. If you dont know how to use the decimal, instead of writing a remainder, write a decimal and add a "0" next to your "81" and just continue your division. In the end, you should get 4.5
198 ÷ 11 =18
so 1 liter = 18 km
81 ÷ 18 = 4.5