Question

if a man runs at 9m/sec,what distance can he cover in 2hours30minutes?

Answer 1

Speed of man  9m/se
Distance covered is =  150*60s*9m/s
                                = 9000s *9m/s
                                =81000m= 81 km
 The distance covered is 81km

Answer 2

speed=9 m/s
time= 2hrs 30 mins= 9000seconds
speed=distance/time
distace=speed*time
           =9*9000
           =81000metres
           =81kilometers