Rising productivity usually reduces workers' standards of living

Suppose the tax amount on the first $10,000 income is $0; $2000 on the next $20,000; $4000 on the next $20,000; $6000 on the next $30,000; and 40 percent on any income over $80,000. Family A has income of $30,000 and Family B has income of $80,000. What

is the marginal and average tax rate for each family? A) Family A: marginal—10 percent; average—6.7 percent; Family B: marginal—30 percent; average—15 percent. B) Family A: marginal—10 percent; average—20 percent; Family B: marginal—30 percent; average—23 percent. C) Family A: marginal—10 percent; average—10 percent; Family B: marginal—40 percent; average—40 percent. D) Family A: marginal—10 percent; average—15 percent; Family B: marginal—40 percent; average—20 percent.

In 2012, U.S. exports of services ______ U.S. imports of services by about _____.

A. exceeded; $19B B. fell short of; $19B C. exceeded; $196 B D. fell short of; $196B