A string is cut so that one section is 5 inches longer than the other. Twice the length of the longer section is three times the length of the shorter section. Write an equation that allows you to solve for the length of the shorter section. How long is the shorter section?

10 inches
20 inches
15 inches
12 inches

1 answer

Let's denote the length of the shorter section as \( x \) inches. Since the longer section is 5 inches longer than the shorter section, we can express the length of the longer section as \( x + 5 \) inches.

According to the problem, twice the length of the longer section is equal to three times the length of the shorter section. We can write this as an equation:

\[ 2(x + 5) = 3x \]

Now, let's solve for \( x \):

  1. Expand the left side:

\[ 2x + 10 = 3x \]

  1. Subtract \( 2x \) from both sides:

\[ 10 = 3x - 2x \]

  1. This simplifies to:

\[ 10 = x \]

So, the length of the shorter section is \( \boxed{10} \) inches.