Each problem is unrelated to the others.

1. Given: Selling price per unit, $20; total fixed expenses, $5,000; variable expenses per unit, $16. Find break-even sales in units.

2. Given: Sales, $40,000; variable expenses, $30,000; fixed expenses, $8,000; net income, $2,000. Find break-even sales in dollars.

3. Given: Selling price per unit, $30; total fixed expenses, $33,000; variable expenses per unit, $14. Find total sales in units to achieve a profit of $7,000, assuming no change in selling price.

4. Given: Sales, $50,000; variable expenses, $20,000; fixed expenses, $20,000; net income, $10,000. Assume no change in selling price; find net income if activity volume increases 10 percent.

5. Given: Selling price per unit, $40; total fixed expenses, $80,000; variable expenses per unit, $30. Assume that variable expenses are reduced by 20 percent per unit, and the total fixed expenses are increased by 10 percent. Find the sales in units to achieve a profit of $20,000, assuming no change in selling price.