35/18 litres per kilometers
Explanation:Amount in liters = 7/12 L
Distance = 3/10 kilometers
Unit rate = amount/distance
[tex]\text{unit rate = }\frac{\frac{7}{12}\text{litres}}{\frac{3}{10}\text{kilometers}}[/tex]Unit rate = 7/12 ÷ 3/10
Using the KCF: keep the first fraction, change the sign to multiplication and flip the second fraction
[tex]\begin{gathered} \text{flip 3/10 = 10/3} \\ \text{Unit rate = }\frac{7}{12}\times\frac{10}{3} \end{gathered}[/tex][tex]\begin{gathered} \text{unit rate = 70/36 }=\frac{2\mleft(35\mright)}{2\mleft(18\mright)} \\ \text{unit rate = 35/18 litres/kilometers} \end{gathered}[/tex]