One day,Ravi left home and cycled $10 \,km$ southwards,turned right and cycled $5 \,km$,turned right and cycled $10 \,km$,and finally turned left and cycled $10 \,km$. How many kilometres will he have to cycle to reach his home straight? (in $km$)

After walking a distance of $50 \, m$ to the south of her house,Lakshmi turns left and walks another $20 \, m$. Then she turns north and walks $30 \, m$ and then starts walking to her house. In which direction is she walking now?

The door of Aditya's house faces the East. From the back side of his house,he walks straight $50 \, m$,then turns to the right and walks $50 \, m$ again. Finally,he turns towards left and stops after walking $25 \, m$. Now,Aditya is in which direction from the starting point?

James started from his house towards west. After walking a distance of $30 \,m$,he turned towards right and walked $20 \,m$. He then turned left and moved a distance of $10 \,m$,turned to his left again and walked $40 \,m$. He now turns to the left and walks $5 \,m$. Finally,he turns to his left. In which direction is he walking now?

There are four towns $P, Q, R$ and $T$. $Q$ is to the South-west of $P$,$R$ is to the East of $Q$ and South-east of $P$,and $T$ is to the North of $R$ in line with $QP$. In which direction of $P$ is $T$ located?

$A$ postman was returning to the post office which was in front of him to the north. When the post office was $100 \, m$ away from him,he turned to the left and moved $50 \, m$ to deliver the last letter at Shantivilla. He then moved in the same direction for $40 \, m$,turned to his right and moved $100 \, m$. How many metres was he away from the post office? (in $m$)