 Okay, so let's do another one of these fuel economy problems so in this one you're wanting to convert the rating from miles per gallon to Kilometers per liter so in order to do that you're going to need the two conversion factors one kilometer equals 0.621 miles and one gallon equals 3.785 liters and then from there. It's pretty straightforward. You're just taking your distance units from miles canceling those out and Getting kilometers so you use that first conversion factor putting in the miles on the bottom kilometers on top and Then you want to get rid of your gallons convert them to liters But you want it per liter So you want to put the gallons on the top liters on the bottom So that'll give you units overall of kilometers per liter And then you just go ahead and do the math problem 43 divided by 0.621 and then Divide that answer by 3.785 and you should get 18 kilometers per liter now Remember the number of significant figures has to be two Because Two significant figures was given in the problem at 43 miles per gallon so The final answer has to only have two significant figures at 18 kilometers per liter Okay, hopefully this makes sense. Let me know if you have any questions