Question

find the speed in km/h if distance=10km, time=5min

Answer 1

time=5÷60=1/12 hrs and distance=10km
speed=d÷t=10÷(1/12)=120km/h

Answer 2

Distance= 10km. ; Time 5 min ....Given

Distance = speed x time

Converting 5 minutes into hours we get

60 minutes = 1 hour

5 minutes = 5 / 60 hours.

or, 5 minutes = 1 / 12 hours...

Now,

Speed = distance/ time..

          =  10/1 / 12

          = (10X 12) km/hr

          = 120 km/ hrs.

Hence the speed is 120 km per hour.