Question
A rectangle's length, in inches, is 6
more than twice its width, in inches. If the perimeter of the rectangle is 60
inches, what is its width?
more than twice its width, in inches. If the perimeter of the rectangle is 60
inches, what is its width?
Answers
GPT-4o mini
Let the width of the rectangle be denoted as \( w \) inches. According to the problem, the length \( l \) of the rectangle can be expressed as:
\[
l = 2w + 6
\]
The formula for the perimeter \( P \) of a rectangle is given by:
\[
P = 2(l + w)
\]
We know the perimeter is 60 inches, so we set up the equation:
\[
2(l + w) = 60
\]
Dividing both sides by 2, we get:
\[
l + w = 30
\]
Now we can substitute the expression for \( l \) from the first equation:
\[
(2w + 6) + w = 30
\]
Combining like terms, we have:
\[
3w + 6 = 30
\]
Next, we subtract 6 from both sides:
\[
3w = 24
\]
Now, we can divide both sides by 3 to solve for \( w \):
\[
w = 8
\]
Thus, the width of the rectangle is \( \boxed{8} \) inches.
\[
l = 2w + 6
\]
The formula for the perimeter \( P \) of a rectangle is given by:
\[
P = 2(l + w)
\]
We know the perimeter is 60 inches, so we set up the equation:
\[
2(l + w) = 60
\]
Dividing both sides by 2, we get:
\[
l + w = 30
\]
Now we can substitute the expression for \( l \) from the first equation:
\[
(2w + 6) + w = 30
\]
Combining like terms, we have:
\[
3w + 6 = 30
\]
Next, we subtract 6 from both sides:
\[
3w = 24
\]
Now, we can divide both sides by 3 to solve for \( w \):
\[
w = 8
\]
Thus, the width of the rectangle is \( \boxed{8} \) inches.