1.

In a marathon, Varun runs 800 metres in 2 minutes 40 seconds. What is his speed in metres per second?

A. \[4\,m\,{{s}^{-1}}\]                        
B. \[5\,m\,{{s}^{-1}}\]        
C.        \[200\,m\,{{s}^{-1}}\]                   
D.        \[1600\,m\,{{s}^{-1}}\]
Answer» C.        \[200\,m\,{{s}^{-1}}\]                   


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