Atrain travels 97 kilometers in 4 hours, and then 63 kilometers in 1 hours. what is its average speed? answer? units?

Given data

Train covers a distance

                             (S₁) = 97 Km,    in time (t₁) = 4 hr

and then covers a distance

                              (S₂) = 63 Km,  in time (t₂) = 1 hr

What is the average speed (v) = ?

The average speed of the train is the ratio of the total distance covered to the total time taken,

       since total distance covered = 97 km + 63 km

                                                        = 160 Km

       and total time taken = 4 hr + 1 hr

                                          = 5 hours

       Therefore,

        average speed   = total distance covered /total time taken

                                     = 160 km/ 5 hr

                                     = 32  km/hr

The average speed of the train is 32 km/hr  

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