Answer to Question #136463 in Physics for vuyo

Question

A man cycles to his destination with the wind at 8 m/s , and returns home against the wind at 4 m/s . What is his average speed?

Answer 1

$v=\frac{s+s}{s/8+s/4}=\frac{2}{1/8+1/4}=5.33(m/s)$