Let's denote the lengths of the three sides of the shelter.
- The back wall length is 3.25 feet.
- Let the width of each of the two side walls be \( x \).
According to the problem, the total length of all three sides is 6 feet. This gives us the equation:
\[ 3.25 + x + x = 6 \]
Simplifying this, we get:
\[ 3.25 + 2x = 6 \]
Now, to isolate \( 2x \), we subtract 3.25 from both sides:
\[ 2x = 6 - 3.25 \] \[ 2x = 2.75 \]
Next, we divide by 2 to find \( x \):
\[ x = \frac{2.75}{2} \] \[ x = 1.375 \text{ feet} \]
Now, we need to convert feet into inches because the answer choices are given in inches. There are 12 inches in a foot, so:
\[ 1.375 \text{ feet} \times 12 \text{ (inches/foot)} = 16.5 \text{ inches} \]
So, \( x = 16.5 \) inches.
Therefore, the length of each of the two side walls is 16.5 inches, matching:
B) each side is 16 and 1/2 in.
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