A hot dog bun (volume 260 cm3) with a density of 0.16 g/cm3 is crushed in a picnic cooler into a volume of 145 cm3. What is the new density of the bun?

Answer 1

Density is mass/volume. The mass of the bun never changes, only its volume. Solve for the original mass.

0.16=x/260. X=41.6 grams.

41.6/145=0.286 g/cc. Cc stands for cubic centimeter.

Now think about it logically. Should the bun be more sense now that it has been crushed? Of course! The math proves it.