Lobster has Approximately ____ milligrams of cholesterol?

Question

There are 72 milligrams of cholesterol in a 3.1 ounce serving of lobster. How much cholesterol is in 5 ounces of​ lobster?

Answer 1

I find the best way to answer questions like these is to use a proportion. For this problem, they tell you that they would like to find how much cholesterol is in 5 oz. of lobster, based on the pervious information that was given.

We know that there are 72 milligrams (mg) in 3.1 ounces (oz.) of lobster, which we can turn into a ratio:

72 mg

3.1 oz.

You can then use that ratio to get how many mg would be in 5 oz. of lobster:

72 mg = X mg

3.1 oz. 5 oz.

Now you can solve the proportion:

72mg * 5 oz. = 360

360 / 3.1 oz. = 116.1 mg

So there is 116.1 mg of cholesterol in a 5 oz. piece of lobster