Calculate $7 for 2 bottles

Step by step

The question

Question: $7 for 2 bottles.

How much for 1 bottle?

A unit rate tells us how much for just 1.

Here: dollars for 1 bottle.

1 Write it as a fraction

We write it as a fraction.

The money goes on top.

The bottles go on the bottom.

2 Divide to get 1 at the bottom

We want 1 bottle on the bottom.

2 divided by 2 is 1.

We divide the top by 2 too, so the rate stays the same.

7 divided by 2 is 3.5.

So it is 3 dollars and 50 cents for 1 bottle.

Per means for each.

So the unit rate is 3 dollars and 50 cents per bottle.

3 Check

Let's check: 2 bottles at 3 dollars and 50 cents per bottle.

2 times 3.5 is 7.

That is 7 dollars, so it is right!

Let's look back.

First: write it as a fraction.

Then: divide to get 1 at the bottom.

Last: check.