Presidio, Incorporated, produces one model of mountain bike. Partial information for the company follows:

Required: ast month, Laredo Company sold 490 units for $45 each. During the month, fixed costs were $5,724 and variable costs were $9 per unit.

Required:

1. Determine the unit contribution margin and contribution margin ratio.
2. Calculate the break-even point in units and sales dollars.
3. Compute Laredos margin of safety in units and as a percentage of sales.