ABC company wants to sell enough products to earn a profit of \$40,000, if unit sales are \$10 and variable costs \$8 , fixed cost \$80,000 how many units must be sold to earn a profit of \$40,000. Any assistance would be greatly appreciated! Best Regards, Vernessa Hi Vernessa, The amount of profit you earn depends on the number of units sold so let x be the number of items sold. Since a unit sells for \$10 your income I(x) is given by I(x) = \$10 x You have two kinds of costs, a fixed cost and a variable cost. The fixed cost is \$40,000. This is the cost for thinks like heating, lighting, building rental, etc. Things that don't depend on the number of unite you produce. Then you have a variable cost of \$8 per unit. This is what it cost you produce an item, things like employee wages, materials, etc. Thus to produce x units you cost C(x) is given by C(x) = \$40,000 + \$8 x The profit you make after producing x units P(x) is your income minus your costs thus P(x) = I(x) - C(x) You want a profit of P(x) = \$40,00. Solve for x. Penny