It takes Xiao Ming 80 minutes to read a book and Xiao Li 1 / 6 hours to read the same book

It takes Xiao Ming 80 minutes to read a book and Xiao Li 1 / 6 hours to read the same book

80 / 60 is equal to 1 and 2 / 6, greater than 1 and 1 / 6, so Xiao Li is fast