Time taken to run 5 kilometers = 28 minutes
Time taken to run one kilometer :-
[tex] = \frac{28}{5} [/tex]
[tex] = 5.6 \: minutes[/tex]
So , it takes 5.6 minutes to run 1 kilometer .
Time taken to run 50 kilometers :-
[tex] = 50 \times 5.6[/tex]
[tex] = 280 \: minutes[/tex]
280 minutes in hours :-
[tex] = \frac{280}{60} [/tex]
[tex] = 4 \: \: hours[/tex]
Therefore , it will take 4 hours for the runner to complete her 50 kilometer race .
