A 2-litre bottle of one juice costs 3.70 dollars and a 3-litre bottle of the same juice costs 5.25 dollars. Enter the savings per litre from choosing the better buy, in dollars.

الشرح

The bottles cost 1.85 and 1.75 dollars per litre, so the larger bottle saves 0.10 dollars per litre. Subtracting the total prices would give 1.55 dollars, but that difference covers packages with different volumes.