1.  Kunal walks 10 km towards North. From there he walks 6 Km towards South. Then, he walks 3 Km towards east. How far and in which direction is he with reference to his starting point ?
A. 5 Km North
B. 5 Km South
C. 5 Km East
D. 5 Km North-East

Answer: Option D

Explanation:

Clearly, Kunal moves from A 10 Km northwards upto B, then moves 6 Km southwards upto C, turns towards east and moves 3 km upto D.

Then AC = (AB-BC) = 4 Km

So Kunal distance from starting point A

AD = √(AC2 + CD2)

= √(4)2 + (3)2

= √16 + 9

= 5

So AD is 5 Km also with reference to starting point Kunal's direction is North-East.