Question

A car shows 57300 km on its odometer when the time when the time was 8:30 a.m . what is the distance travelled by the car at 8:50 a.m if the odometer reads 57400 km? During this time what is the speed of car in km/ h ? Show the speed in km / h?

Answer 1

Given
Initial reading of odometer = 57300.0 km
Final reading of odometer = 57400.0 km
Initial Time = 8:30 AM
Final Time = 8:50 AM

We know that Odometer measure the distance travelled by the car
So Total distance covered by car= Final reading of odometer - Initial reading of odometer
=57400.0 - 57300.0 = 100.0 km

Total time taken by Car = Final Time - Initial Time = 8:50 AM - 8:30 AM = 20 minutes= 20/60 hrs. = 1/3 hrs.

Now Speed of the car is defined as

= Total distance covered/Total time taken = 100.0/20 = 5 km/min

Also

Speed of the car in km/hr. =100/ (1/3) = 300 km/hr.

Hope it helps..