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A reduced fat cookie contains 4 g of fat per serving. In order for food to be termed 'reduced fat', it must have at least 20% less fat than the regular item. What can you conclude about how much fat is in a serving of the regular cookie?

The problem asks how much fat is in a serving of the regular cookie, given that a reduced-fat cookie contains 4 grams of fat per serving. The key information is that a "reduced-fat" item must contain at least 20% less fat than the regular version.

Let's set up an equation:

Let \( x \) be the amount of fat in a serving of the regular cookie.

Since the reduced-fat cookie has 20% less fat, the fat content of the reduced cookie is \( 80\% \) of the fat content of the regular cookie. Therefore, the relationship between the fat in the reduced cookie and the regular cookie is:
\[
0.8x = 4
\]

Now, solve for \( x \):
\[
x = \frac{4}{0.8} = 5
\]

So, a serving of the regular cookie contains **5 grams of fat**.

Would you like more details on this solution, or have any other questions?

Here are 5 related questions for practice:
1. If another reduced-fat cookie contains 3.2 grams of fat, how much fat is in the regular cookie?
2. What percentage of fat is removed from a regular cookie if the reduced-fat version has 3 grams of fat and the original has 5 grams?
3. If a serving size of the regular cookie is 30 grams, what percentage of the serving size is fat?
4. How would the equation change if the reduced-fat cookie had 30% less fat than the regular cookie?
5. If a reduced-fat cookie contains 2 grams of fat, what is the minimum fat content of the regular cookie to meet the 20% reduction criterion?

**Tip**: Always ensure you understand percentage reductions and how they relate to the original value!

Learn how to calculate the fat content of a regular cookie when given the fat content of a reduced-fat cookie and a percentage reduction requirement. This problem involves percentage reductions and basic algebra, suitable for Grades 6-8 students.

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