The variable costs per unit are $18 when a company produces 24,000 units of product. What are the variable costs per unit when 26,000 units are produced?

$17.00.

$16.50.

$17.50.

None of these.

$18.00.

The fixed costs per unit are $20 when a company produces 20,000 units of product. What are the fixed costs per unit when 15,000 units are produced?

$26.67.

$20.00.

$15.00.

$14.17.

$11.67.

Total costs are $210,000 when 15,000 units are produced; of this amount, variable costs are $68,000. What are the total costs when 21,000 units are produced?

$237,200.

$266,800.

$294,000.

None of these.

Total costs cannot be calculated based on the information presented.