Total revenue equals price per unit times quantity sold

Steps:

• Identify the definition: Total revenue (TR) is the total income from sales.
• Recall the formula: TR = Price (P) × Quantity (Q) sold.
• Apply to Dimitri's firm: He sells bottles at a set price, so multiply bottles sold by price per bottle.
• Confirm: This gives total money received from customers.

Why B is correct:

• Total revenue is defined in economics as TR = P × Q, directly matching multiplying quantity sold by price per bottle.

Why the others are wrong:

• A: Cost per bottle calculates total cost, not revenue.
• C: Profit per bottle yields total profit, which subtracts costs from revenue.
• D: Tax per bottle calculates total tax paid, not revenue earned.

Final answer: B