.. Question 22 (5 points) (DO NOT write your answer here! To receive full credit, show clearly your complete work on a piece of paper and submit it to the Dropbox) **KEEP 4 DECIMAL POINTS** 12 (5 points) 5 Suppose an iPad costs $500 in U.S. and 400 in U.K. According to Purchasing Power Parity (PPP), what should be the exchange rate between U.S. and U.K. based on iPad prices (in American Term, i.e., S($/))? &