On average, the cost of a Big Mac in the U.S. is $5.30 (Jul 2017) If purchasing power parity holds, how much should the Big Mac cost in China if the exchange rate is $1 = RMB 6.512? The actual average price of a Big Mac in China is 20 RMB. What dollar price is implied by PPP? How do you explain the difference between the implied price and the actual price?