question_answer

Rohan walks a distance of 3 km towards North, then turns to his left and walks for 2 km. He again turns left and walks for 3 km. At this point, he turns to his left and walks for 3 km- I How many kilometres is he from the starting point?

A) 1 km                

B) 2 km

C) 3 km                            

D) 5 km

Correct Answer: A

Solution :

The movements of Rohan are as shown in given figure. (A to B, B to C, C to D and D to E). Clearly, \[AD=BC=2\text{ }km\] So, required distance \[=AE\]             \[=(DE-AD)\]             \[=(3-2)\,km\]             \[=1\,km\]