To determine the break-even point, or the number of units that must be sold so that no profit or loss occurs, an economist uses the formula Pr = Cx + F, where P is the selling price per unit, x is the number of units that must be sold to break even, C is the cost to make each unit, and F is the fixed cost. A business analyst has determined that the selling price per unit for a bicycle is $500. The cost to make the bicycle is $400, and the fixed cost is $27,500. Find the break-even point.