Solve the following system of linear equations: 3s + 2d = 1680, 4s + 5d = 3360.

Here are the solutions to the problems.

: Skirts and Dresses

Step 1: Define variables and set up equations.
Let $s$ be the cost of one skirt and $d$ be the cost of one dress.
From the problem statement, we can form two linear equations:

$$3s + 2d = 1680 \quad \text{(Equation 1)}$$ $$4s + 5d = 3360 \quad \text{(Equation 2)}$$

Step 2: Solve the system of equations using elimination.
To eliminate $d$, multiply Equation 1 by 5 and Equation 2 by 2:

$$$$