RRB NTPC Prelims Model Paper 11 with solutions

A and B are standing as a distance of 20 km from each other on a straight East‐Westroad. A and B start walking simultaneously eastwards and westwards respectively andboth cover a distance of 5 km. Then A turns to his left the walks 10 km. B turns to hisright and walks 10 km at the same speed. Then both turn to their left and cover adistance of 5 km at the same speed. What will be distance between them?