Answer
$d/l$
Work Step by Step
The price per liter is equal to the amount paid over the number of liters that are bought. Plugging in d for the amount paid and l for the number of liters bought, we obtain: $d/l$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.