Xiaohua, Xiao Li and Yang Yang took part in the 60-meter swimming competition. Xiaohua used 65,438+0 seconds more than Yang Yang, and Xiaoli used 65,438+0 seconds less than Yang Yang. Who swims faster

Xiaohua, Xiao Li and Yang Yang took part in the 60-meter swimming competition. Xiaohua used 65,438+0 seconds more than Yang Yang, and Xiaoli used 65,438+0 seconds less than Yang Yang. Who swims faster? Who swims slowly? Xiao Li is the fastest, Yang Yang is the second, Xiaohua is the slowest, and swimming takes a short time. Suppose Yang Yang takes X, the average speed of Yang Yang is 60/x, Xiaohua is 60/(x+ 1), and Xiaoli is 60/(x- 1). My primary school teacher taught me that when the divisors are equal, they will be divided.