When there is a positive amount of total surplus in a market,it means that the cost of producing the good is zero.

If 1 U.S.dollar exchanges for 7.0 Chinese Yuan,how much would it cost in U.S.dollars and cents to purchase a Chinese toy priced at 140 Yuan?

The total fertility rate necessary to keep the population constant is approximately equal to:

A) 1.0.
B) 1.5.
C) 2.1.
D) 3.0.