A person covers certain distance in 7 hours at a speed of 4 km/h and some more distance in 2 hours at a speed of 2 km/h. Find his average speed for the entire distance covered.
1
\(4\frac{5}{9}\)
2
\(2\frac{5}{9}\)
3
\(5\frac{5}{9}\)
4
\(3\frac{5}{9}\)