Question

A bottle of perfume contains 1.21 ounces of perfume. How many ounces have been used if it originally contained 2 ounces of perfume?

Answer 1

Long Answer:

Well, I am no Math Expert or anything like that, but this is simple math.

If the perfume bottle originally contained 2 ounces and it has 1.21 ounces left, then it is 2.00 - 1.21, which equals 0.79 ounces used of the perfume.

Short Answer: 0.79