Given: a motorist travels a distance of 65 kms, in 2 hours and 10 minutes.
Distance =65km
=65×1000 m [1km=1000 meters]
=65000 m
Time = 2 hours 10 minutes
= 2 hours 10 minutes
=2 × 60 minutes + 10 minutes
[1 hour=60 minutes]
=130 minutes
∵Speed=distancetime
=65000 m130 time
=500 m/min
Hence the speed of a motorist is 500 m/min.