How do you express \[12km/L\] in miles \[/\]gal \[?\]

Hint: We have to know the conversion value of the above question. Now we have to convert kilometer into miles and liter into gallon. Here we have to know the value of one kilometer and also one liters. Then only we can convert them into miles per gallon. Kilometer is the unit of distance or displacement. A liter is the unit of quantity of a liquid. Miles is also the unit of distance or displacement and gallon is also the unit of the volume or the quantity of any liquid.

Complete step by step answer:
we saw in the hint section that we have to convert kilometers into miles and also we have to convert liters into gallons. We know that, \[0.621371\] is equal to one kilometre.Then, \[0.621371 \times 12km = 7.456452\,miles\]
Now conversion from kilometre to miles is done. Now we are going to convert liters into gal.
We know that, \[0.264172\] gallons in each litter means \[12\,km/L\] is equivalent to \[\dfrac{{7.456452}}{{0.264172}}\] miles per gallon.
$\therefore 12\,km/L= 28.23 $ miles per gallon

Hence, $12\,km/L= 28.23 $ miles per gallon.

Note: We should know that the word mile originated from Roman mile passus, which measured five thousand Roman feet. Mile. We have to know that litre is a metric unit of volume of liquid. This is equal to a thousand cubic centimetres or one cubic metre. The original French metric system used the litter as a base unit. A litter is a bit more than a quart.This one liter is equal to one kilogram as well. This kilogram is a unit of weight in the metric system.