An average worker in Brazil can produce an ounce of soybeans in 20 minutes and an ounce of coffee in 60 minutes, while an average worker in Peru can produce an ounce of soybeans in 50 minutes and an ounce of coffee in 75 minutes.Assume that the two countries trade,which of the following trades can make both better ? ( )
A. Brazil imports coffee and trades 2 ounces of soybeans for 1 ounce of coffee.
Brazil imports coffee and trades 1 ounces of soybeans for 1 ounce of coffee.
C. Brazil imports coffee and trades 3 ounces of soybeans for 1 ounce of coffee.
D. Brazil imports coffee and trades 4 ounces of soybeans for 1 ounce of coffee.
查看答案
Which of the following reduces the demand of sweatshirts ? ( )
A hurricane in South Carolina damages the cotton crop.
B. The price of leather jackets falls.
C. All colleges require morning exercise in appropriate attire.
D. New knitting machines are invented.
The price of coffee rose sharply last month, while the quantity sold remained the same. Each of five people suggests an explanation: Tom: Demand increased, but supply was perfectly inelastic. Dick: Demand increased, but it was perfectly inelastic. Harry: Demand increased, but supply decreased at the same time. Larry: Supply decreased, but demand was unit elastic. Mary: Supply decreased, but demand was perfectly inelastic. Who could possibly be right? ( )
A. Tom, Dick, and Harry
B. Tom, Dick, and Mary
C. Tom, Harry, and Mary
Dick, Harry, and Larry
E. Dick, Harry, and Mary
The demand for which of the following may be more elastic? ( )
A. Eggs
B. Healthcare
C. Rice
D. Mountain Dew
If the government places a $500 tax on luxury cars, which of the following is true ( )
A. the price paid by consumers will rise by more than $500 as a luxury car likely has an elastic demand
B. the price paid by consumers will rise by less than $500 as a luxury car likely has an elastic demand
C. the price paid by consumers will rise by exactly $500 as a luxury car likely has an perfectly elastic demand
D. the price paid by consumers will rise by exactly $500 as a luxury car likely has an perfectly inelastic supply
微信支付 
支付宝支付