Question

Freezer A has interior dimensions 2 ft×2 ft×4 ft and sells for $399.99. Freezer B has interior dimensions 2.5 ft×2.5 ft×3 ft and sells for $499.99. Which freezer is a better buy in terms of dollars per cubic​ foot? Use pencil and paper. Show your work and explain your reasoning.

Answer 1

Freezer A is a better buy in terms of dollars per cubic​ foot.

Explanation:

Freezer A: V = 2*2*4 = 16 ft^3

P/V= 400/16 = 25 $/ft^3

Freezer B: V = 2.5*2.5*3 = 18.75 ft^3

P/V= 500/18.75 = 26.6 $/ft^3

--> 25 < 26.6 that mean Freezer A is cheaper per cubic​ foot.