What is the density of an object if its volume is 40cm3 and its mass is 120grams?

Well, isn't that a happy little question! To find the density, you simply divide the mass of the object by its volume. In this case, if the mass is 120 grams and the volume is 40 cm3, the density would be 3 grams per cubic centimeter. Just remember, there are no mistakes, just happy little accidents in math!