19 Fap is a small country whose currency is the fip. Ten years ago, the exchange rate with the Swiss franc (CHF) was 3 fips per 1 CHF, the inflation indexes were equal to 100 in both Switzerland and Fap, and the exchange rate reflected purchasing power parity (PPP). Now, the exchange rate is 2 fips per 1 CHF. The Swiss inflation index level is at 150, and the Fap inflation index is at 140.
What should the current exchange rate be if PPP prevails?
想问下 Es10/s0 应该是=140/150 还是40/50？
