Traditional Culture Encyclopedia - Hotel accommodation - Seek the answer to an old math problem

Seek the answer to an old math problem

Set Xiao er's horse day trip x Li

The guest's horse travels every hour =300/ 12=25 miles.

Xiao er's horse travels every hour =x/ 12 Li.

When Xiao Er returns to the hotel, there are still 9 hours before the guests leave, which means Xiao Er 9-4=5 hours to go back and forth.

(4+2.5)*25=2.5*(x/ 12)

162.5=2.5x/ 12

2.5x= 1950

x=780

Answer: Xiao Er's horse day tour is 780 Li.