Question

John paid $1.12 for a dozen eggs at his local grocery store. Determine the cost for 2 eggs?

Answer 1

Explanation:

If it has to be done as a proportion, set it up as 112/12 = x/3

In other words, "112 cents is to 12 eggs, as x cents is to 3 eggs."

So your proportion is 112/12 = x/3.

Cross-multiply to get 12x = 336, then divide both sides by 12 to get:

x = 28 cents (per 3 eggs.)

The other way to think about it is, since 3 is one quarter of a dozen, the price of 3 eggs should be one quarter the price of 12.

112 cents divided by 4 is 28 cents.

Hope this helps!