Suppose the Income Tax Rate Is Zero on the First

Short Answer

Suppose the income tax rate is zero on the first $10,000;10% on the next $20,000;20% on the next $20,000;30% on the next $20,000;and 40% on all income above $70,000.Family A has income of $100,000 while Family B has income of $40,000.The marginal tax rate for A will be ________% and for B will be ________%.