A man runs at a speed of 10 km/hr . How much time will he take to cover 750 metres ? also express his speed in m/s

speed=10 km/hr
 distance=750m
            =750/1000
           =3/4km
as we know, time =distance/speed
                        =(3/4)/10hr
                       =7.5hr
speed in m/sec=10*5/18
                          =2.77m/sec