1. Net income before tax is 20% of sales revenue, the contribution margin ratio is 60% and the break-even dollar sales is $200,000. What is the amount of total revenue?

2. Total fixed cost is $350,000, variable cost per unit is $26, and unit sales price is $50. What dollar sales volume will generate an after-tax net income of $60,000 when the income tax rate is 40%.

Please explain!