A rope is 24 feet long. It is cut into two pieces such that one piece is half the length of the other. Find the lengths of the two pieces of rope.

Let [tex]$x$[/tex] be the length of the shorter piece of rope.

[tex] x + 2x = 24 [/tex]
[tex] 3x = 24 [/tex]
[tex] x = 8 [/tex]

The lengths of the rope are 8 feet and 16 feet.

A student solves the problem as shown. Which statements describe the solution? Check all the boxes that apply.

- The stated solution is correct (lengths of 8 feet and 16 feet).
- Based on the way the variable is defined, the equation should be [tex]$x + 2x = 24$[/tex].
- The equation is written correctly, but there is an error in solving the equation.
- Based on the way the variable is defined, and because [tex][tex]$x = 8$[/tex][/tex], the longer piece of rope would be 16 feet, which is correct.



Answer :

To solve the problem, let's break down the steps clearly:

1. Define the variables:
Let [tex]\( x \)[/tex] be the length of the shorter piece of rope. Since one piece is half the length of the other, the longer piece of rope would be [tex]\( 2x \)[/tex].

2. Total length of the rope:
The sum of the lengths of the two pieces should equal the total length of the rope, which is 24 feet.

3. Formulate the equation:
Given that the shorter piece is [tex]\( x \)[/tex] and the longer piece is [tex]\( 2x \)[/tex], their sum should equal the total length:
[tex]\[ x + 2x = 24 \][/tex]

4. Solve for [tex]\( x \)[/tex]:
Combine the terms on the left side:
[tex]\[ 3x = 24 \][/tex]

Divide both sides by 3 to isolate [tex]\( x \)[/tex]:
[tex]\[ x = \frac{24}{3} = 8 \][/tex]

So, the length of the shorter piece of rope is [tex]\( 8 \)[/tex] feet.

5. Determine the length of the longer piece:
The longer piece is twice the length of the shorter piece:
[tex]\[ 2x = 2 \times 8 = 16 \][/tex]

So, the length of the longer piece of rope is [tex]\( 16 \)[/tex] feet.

6. Conclusion:
The lengths of the two pieces of rope are:
- Shorter piece: [tex]\( 8 \)[/tex] feet
- Longer piece: [tex]\( 16 \)[/tex] feet

Let’s check the given multiple-choice statements to see which ones are correct:
- The stated solution is correct (lengths of 16 feet and 8 feet). ✔️
- Based on the way the variable is defined, the equation should be [tex]\( x + 2x = 24 \)[/tex]. ✔️
- The equation is written correctly, but there is an error in solving the equation. ❌
- The way the variable is defined, and because [tex]\( x=16 \)[/tex], the longer piece of rope would be 32 feet, which is not possible. ❌

Based on the correct solution, the only true statements are:
- The stated solution is correct (lengths of 16 feet and 8 feet).
- Based on the way the variable is defined, the equation should be [tex]\( x + 2x = 24 \)[/tex].