1.

A cyclist travels at an average speed of \[25\,km\,{{h}^{-1}}.\] How long will it take for him to travel a triangular journey through three places \[{{P}_{1}},{{P}_{2}}\]and\[{{P}_{3}}\] as shown in the figure?  

A.  20 minutes        
B.  36 minutes        
C.         1 hour                 
D.         1 hour 20 minutes
Answer» C.         1 hour                 


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