Each problem is unrelated to the others.

1. Given: Selling price per unit, $25; total fixed expenses, $9,100; variable expenses per unit, $18. Find break-even sales in units.

2. Given: Sales, $43,000; variable expenses, $30,100; fixed expenses, $8,400; net income, $4,500. Find break-even sales in dollars.

3. Given: Selling price per unit, $29; total fixed expenses, $30,400; variable expenses per unit, $13. Find total sales in units to achieve a profit of $8,000, assuming no change in selling price.

4. Given: Sales, $51,000; variable expenses, $18,000; fixed expenses, $18,000; net income, $15,000. Assume no change in selling price; find net income if activity volume increases by 20%.

5. Given: Selling price per unit, $48; total fixed expenses, $106,000; variable expenses per unit, $36. Assume that variable expenses are reduced by 25% per unit, and the total fixed expenses are increased by 15%. Find the sales in units to achieve a profit of $23,000, assuming no change in selling price.