Suppose a firm has an annual budget of $200,000 in wages and salaries, $75,000 in materials, $30,000 in new equipment, $20,000 in rented property, and $35,000 in interest costs on capital. The owner/manager does not choose to pay himself, but he could receive income of $90,000 by working elsewhere. The firm earns revenues of $360,000 per year. To receive a normal profit, the firm described above would have to

The firm will need additional revenue of $90,000 to earn normal profit (zero economic profit)

Explanation:

Normal profit equals zero economic profit or when total revenue equals

the addition of explicit cost and Implicit cost. Implicit cost is the opportunity cost.

Explicit cost = $200,000 + $75,000 + $30,000 + $20,000 + $35,000

=$360,000

Implicit cost is $90,000

Total revenue is $360,000

Normal profit = $360,000 - ($360,000 + $90,000)

$360,000 - $450,000

-$90,000.

This means the firm will need additional revenue of $90,000 to earn normal profit (zero economic profit)