You have volunteered to make flags for the
school color guard. Each flag has a red stripe
and a 12 inch wide white stripe. The width of
each flag is 0.9 times of its length. The length
is 48 inches How wide is the red stripe?

Given the problem, we know:

- The length of the flag is 48 inches.
- The width of the flag is 0.9 times its length.
- The flag has a red stripe and a white stripe that is 12 inches wide.

### Step 1: Calculate the width of the flag.
The width of the flag is calculated as:
\[
\text{Width of the flag} = 0.9 \times \text{Length} = 0.9 \times 48 = 43.2 \text{ inches}
\]

### Step 2: Determine the width of the red stripe.
Since the total width of the flag is 43.2 inches, and the white stripe is 12 inches wide, the width of the red stripe is:
\[
\text{Width of the red stripe} = \text{Total width} - \text{Width of the white stripe} = 43.2 - 12 = 31.2 \text{ inches}
\]

Thus, the red stripe is 31.2 inches wide.

Would you like more details on any part of the solution, or do you have any further questions?

Here are 5 related questions you might find interesting:

1. If the length of the flag were increased to 60 inches, what would be the new width of the red stripe?
2. What percentage of the total width of the flag does the red stripe occupy?
3. If the white stripe was increased to 15 inches wide, what would be the width of the red stripe?
4. How would the width of the red stripe change if the flag's width were 1.1 times its length instead?
5. How much area does the red stripe cover if the length of the flag is 48 inches?

**Tip:** When working with proportions in geometry, it’s helpful to break down the problem into parts and solve step by step to avoid mistakes.

Learn how to calculate the width of the red stripe on a school color guard flag using geometric proportions and subtraction. This problem involves determining dimensions based on given ratios and stripe widths. Suitable for students in Grades 6-8.

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