This is for cost accounting.

Golf Glider makes gasoline-powered golf carts. The selling price is $5,000 each, and costs are as follows: Cost Per Unit Total Direct material $2,000 Direct labor 625 Variable overhead 325 Variable selling 50 Annual fixed production overhead $250,000 Annual fixed selling and administrative 120,000 Golf Glider's income is taxed at a 40 percent rate. a. How many golf carts must Golf Glider sell to earn $600,000 after tax? b. What level of revenue is needed to yield an after-tax income equal to 20 percent of sales