Mr. Lokesh moved for $20 km$ towards North and turned back to South by distance of $40 km$. He turned towards his left and travelled for $20 km$. Again, he turned towards his left for $10 km$, again moved towards left for $20 km$. How far is he from his starting point?

Mr. $A$ walks for $10$ km in front and for $10$ km towards his right. Then again, he walks for $10$ km towards his right and for $10$ km towards his right. How far is he from the starting point?

Rahul cycled for $20 km$ to North and turned to his left and covered $20 km$. He again turned to his left and covered $60 kms$. He again turned to his left and covered $20 km$. Finally, he moved for $40 km$ to his left. How far is he from his starting point?

Directions: Read the given information carefully and answer the question given below:
Amrit started from his office and walked $8 \mathrm{m}$ up to a coffee shop. Then he turned right and walked $5 \mathrm{m}$ to a departmental store. Then again he turned right and walked $7 \mathrm{m}$ up to an Internet Cafe and then turned right and walked $5 \mathrm{m}$ up to his house.

What is the distance between his house and his office?