Question

a man can walk 6 km in 1 hour 15 minutes . find his speed​

Answer 1

Answer:

Step-by-step explanation:

we know that speed = distance/time

given

distance = 8km , time = 1hour 15min

                                   = 1 + 15/60 (to convert minute into hour)

                                   = 1 + 1/4

                                   = 4 + 1/4 (taking LCM)

                                   = 5/4

speed = 8/5/4

         = 8 x 4/5

         = 32/5

         = 6.4 km/hr

Answer 2

Answer:

The distance cover by a man=6 km

Speed =distance /time=6 km/15 min=2.5

So, speed change to m per second =

1km=1000m and 1min =60sec

2.5into 1000 =2500 m per second

1000m= 1km and 3600sec =1hour

2.5into3600=9000k.m per hour