Here's the conversion:
1 kilometer = 0.621371 miles
1 liter = 0.264172 gallons
Therefore, 15 kilometers per liter can be expressed as:
(15 KM/L) * (0.621371 miles/KM) * (1 gallon/0.264172 liters) ≈ 35.31 MPG
So, 15 kilometers per liter is approximately equal to 35.31 miles per gallon.