Calculate how much each of the following items is worth in terms of today's dollars using 180 as the price index for today.

a. in 1925, the cpi was 18 and the price of a movie ticket was $0.30.
b. in 1930, the cpi was 14 and a cook earned $20 a week.
c. in 1940, the cpi was 16 and a gallon of gas cost $0.20.

Why is efficiency an important economic goal?

Trade will take place: a. if the maximum that a consumer is willing and able to pay is less than the minimum price the producer is willing and able to accept for a good. b. if the maximum that a consumer is willing and able to pay is greater than the minimum price the producer is willing and able to accept for a good. c. only if the maximum that a consumer is willing and able to pay is equal to the minimum price the producer is willing and able to accept for a good. d. none of the above.

Janis owns and operates a store in a country experiencing a high rate of inflation. in order to prevent the value of money in her cash register from falling too quickly, janis sends an employee to the bank four times per day to make deposits in a interest-bearing account that protects the store's revenues from the effects of inflation. this is an example of the (menu costs/ unit of account costs/ shoesleather costs) of inflation. pick one