Please help and explain part b

CVP; taxes Golf Glider makes gasoline-powered golf carts. The selling price is $5,000 each, and costs are as follows: 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? golf carts b. What level of revenue is needed to yield an after-tax income equal to 20 percent of sales? Note: In your calculations, round the desired before-tax percentage of sales to two decimal places (for example, round 45.5555% to 45.56% ). Note: Round your final answer to the nearest whole dollar