The problem asks us to identify which strip model represents 75%. Each strip model is divided into sections, and we need to determine which model has 75% of its sections shaded.

1. Problem Description

The problem asks us to identify which strip model represents 75%. Each strip model is divided into sections, and we need to determine which model has 75% of its sections shaded.

2. Solution Steps

First, let's analyze the first strip model. It has 8 sections in total. 6 sections are shaded.

The fraction represented by this model is $\frac{6}{8}$.

To convert the fraction to a percentage, we can divide 6 by 8 and then multiply by 100:

$\frac{6}{8} = 0.75$

$0.75 * 100 = 75$

So, the first model represents 75%.

Let's analyze the second strip model. It has 5 sections in total. 3 sections are shaded.

The fraction represented by this model is $\frac{3}{5}$.

To convert the fraction to a percentage, we can divide 3 by 5 and then multiply by 100:

$\frac{3}{5} = 0.6$

$0.6 * 100 = 60$

So, the second model represents 60%.

Let's analyze the third strip model. It has 6 sections in total. 4 sections are shaded.

The fraction represented by this model is $\frac{4}{6}$.

To convert the fraction to a percentage, we can divide 4 by 6 and then multiply by 100:

$\frac{4}{6} = \frac{2}{3} \approx 0.6667$

$0.6667 * 100 = 66.67$

So, the third model represents approximately 66.67%.

The first model represents 75%.

3. Final Answer

The first model shows 75%.