Infоrmаtiоn fоr questions 21-25 The grаphs below show the production possibilities curves (PPC) for the U.S. аnd Canada, which both produce cars and wheat. Initially suppose that the two countries trade only with each other. Careful: the figures are not on the same scale, don’t use the scale for any answers. Instead use your reasoning and calculations. When the two countries trade with each other, the trade (or world) price of cars must be in between two certain bounds. Enter a reasonable trade price. Enter a whole or decimal number. Enter 0 if the answer cannot be obtained with the information given. Any number within the correct bounds will be accepted. Remember: the trade (or world) price of cars is “how many units of wheat are exchanged per each car.” So, if PC = 5 units of wheat / car, people who trade at this price are exchanging 5 units of wheat for one car, and vice-versa.