The total cost of a certain length of cloth is `Rs 200`. If the piece was 5 m longer and each metre of cloth costs `Rs2` less, the cost of the piece would have remained unchanged. How longer is the piece and what is its original rate per metre?

Explanation

To solve the problem step by step, we will first define the variables and then set up the equations based on the information provided.

### Step 1: Define the Variables
Let:
- \( x \) = original length of the cloth in meters
- \( r \) = original cost per meter of the cloth in Rs

### Step 2: Set Up the Equation for Total Cost
...