A chair costs 500 euros. The same chair also costs 10,000 Japanese yen. If purchasing power parity

Question:

A chair costs 500 euros. The same chair also costs 10,000 Japanese yen. If purchasing power parity (PPP) holds, what should be the between the yen and the euro?
Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...