### Home > INT3 > Chapter 3 > Lesson 3.2.2 > Problem3-94

3-94.

When placed end-to-end, three red rods are $2$ cm longer than two blue rods. Three blue rods are $2$ cm longer than four red rods. How long is each rod?

Let $r=$ the length of a red rod and $b=$ the length of a blue rod.
Write and solve a system of equations.

$3r=2+2b$
$3b=2+4r$