Required information [The following information applies to the questions displayed below.) Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units); Sales Variable expenses Contribution margin Fixed expenses Net operating income $ 45,000 31,500 13,500 3,640 $4,860 10. How many units must be sold to achieve a target profit of $8,100? Number of units