Question 31

A boy starts from home, which faces south. He walks a distance of 10 m, turns right and walks 10 m. Then he turnsright and walks 10 m, then turns left and walks 10 m and walks back 5 m. Whatis the distance between the homeandthe boy ?

Solution

Let the house be located at (0,0).
Then the stops along the journey made by the boy are:
(0,-10) --> (-10,-10) --> (-10,0) --> (-20,0) --> (-15,0) 
Hence, the distance between house aand the boy is 15 m 


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