Question

HELP an athelete runs at a speed of 583km/h
how many seconds will he last in run a kilometer

Answer 1

The athlete runs 583 km every hour. 

1 hour = 60 minutes * 60 seconds =  3600 seconds. 

     Distance            time
     583 km       in    3600 seconds  
         1 km       in     x seconds 

           3.600
 x = -------------- =  6, 17 seconds 
            583 

the athlete runs  a kilometer in 6,17 seconds.