The price per organic egg is 50 cents. The price of a tray of eggs that contains 30 eggs is $12. How much can you save, in cents, per egg if you buy a tray versus individual eggs?
Let's be accurate as possible and think first.
10
The price per egg in a tray is $12 / 30 eggs = $0.

4 / egg.

The equivalent of $0.

4 in cents is $0.

4 x 100 cents / dollar = 40 cents.

Hence, you can save 50 cents - 40 cents = 10 cents per egg if you buy a tray.

.

The answer: 10