Respuesta :

Xi'an, China  

34x60n.miles=2,040 nautical miles  

109x60n.miles=6,540 nautical miles  

2,040+6,540=8,580 nautical miles. (this one is closer)  

Los Angeles, USA:  

34x60n.miles=2,040 nautical miles  

118x60n.miles=7,080 nautical miles  

2,040+7,080=9,120 nautical miles. (this one is further)