Java Joe operates a chain of coffee shops. The company pays rent of $20,000 per year for each shop. Supplies (napkins, bags and condiments) are purchased as needed. The manager of each shop is paid a salary of $3,000 per month, and all other employees are paid on an hourly basis. Relative to the number of customers for a shop, the cost of supplies is which kind of cost?

a. Variable cost
b. Mixed cost
c. Relevant cost
d. Fixed cost

a. Variable cost

Explanation:

Variable cost -

It refers to the amount of money which increases or decreases with the production output , is referred to as variable cost .

Variable cost is directly proportional to the production .

For example , the cost of raw material increases as the production of the output increases .

In numerical terms , the variable cost is the sum of the marginal cost over the total units .

The summation of the fixed cost and variable cost gives the total cost .

Hence , from the given scenario of the question ,

The correct option is  a. Variable cost .

answer///supply is elastic, and demand is inelastic;