Make a real-world scenario problem that goes with an no solution linear equation

Scenario: A business owner is trying to determine the cost of producing a certain product. The cost includes fixed expenses such as rent, utilities, and salaries for employees, as well as variable expenses such as materials and production costs. The owner knows the total cost for producing 100 units of the product is $5000, and the cost for producing 200 units is $10,000. However, the owner is unable to determine a specific equation to calculate the cost for producing any number of units between 100 and 200.

Equation: Let C be the total cost and x be the number of units produced. Based on the given information, the equation for the total cost is C = 50x. While the owner can calculate the cost for producing 100 or 200 units using this equation, they are unable to determine the cost for any other number of units within the given range.