Read the directions carefully and answer the question based on them. Rohit is looking for his brother. He started from a point and went 110 m towards the west before turning to his  left. Then he went 40 m, turned to his left and went 50 m to look for his brother at his uncle’s place. His brother was not there. From there, he went 120 m to his north before meeting his brother at point
X. What is the shortest distance between point X and the starting point of Rohit?