When a firm is experiencing economies of scale, long-run a. average total cost is minimized. b. average total cost is greater than long-run marginal cost. c. average total cost is less than long-run marginal cost. d. marginal cost is minimized.

A. Average total cost is minimized

Explanation:

Economies of scale refers to the cost advantages a firm enjoys when production becomes efficient. Economies of scale can be achieved by increasing production and and lowering cost of production.This is because cost are spread over a larger number of goods, thereby, making per unit cost cheaper.

There are two types of cost

1. Fixed cost: They are cost that doesn't change during the production process. Such as buildings, furnitures and fittings, machineries.

2. Variable cost: They are cost that changes with production process such as cost of raw materials.

When a firm is experiencing economies of scale, long-run, average total cost is minimized.

his average speed in km per hour is ≈ 55.4 km/h and about 15.4 m/s.

the correct answer is b.)