Suresh left home and walked 5 km towards the south; turned right and walked 2.5 km and turned right and walked 5 km and turned left and cycled 5 km. How many kilometers will he have to walk to reach his home straight?

5 Km 7.5 Km 10 Km 15 Km

7.5 Km

Suresh has to walk 7.5 km straight.