Krishna walked 20 m towards the north. Then he turned right and walked 30 m. Then he turned right and walked 35 m. Then he turned left and walked 15 m. Finally he turns left and went 15 m. In which direction and how many meters is Krishna compared to from the starting position ?

Let the initial point of Krishna be A.

He travelled for 20 m in the North. Then he turned right and travelled for 30 m. So, now he is 20 m north and 30 m east of A. 

Then again turned right and travelled for 35 m. Now, he is 30 m east and 15 m south of A. 

Then, he turned left and walked for 15 m. Now, he is 45 m east and 15 m south of A. 

Finally, he travelled 15 m north. Now, he is 45 m to the east of A. 

Hence, Krishna is 45 m east of A after travelling the entire distance. 

Option E.