Question

the odometer of a car reads 24830 km at1 : 25pm, 24865 km at 2 : 05 pm and 25005 km at 3 : 15 pm respectively .calculate the speed of the car in km/h from 1 : 25pm to 3:15 pm and then express the speed in m / s.

Answer 1

First calculate the total distance traveled using the odometer.

starting reading at 1:25 was 24830 km
end reading at 3:15 was 25005

Therefore total distance traveled was  25005km - 24830km =  175 km

Total time taken between 1:25pm and 3:15 pm  3:15
                                                                           -1:25
                                                                            1hr 50 mins
1 and 5/6 hours = 11/6 hrs

Speed = distance/time 
           175 ÷ 11/6    = 175 × 6/11
                               
                              95.45 km/hr

speed in m/s.....multipy by 1000/3600

95.45  × 10/36

= 26.52 meters/second

Answer 2

Answer:

distance = 24830 - 24865

time = 1:25 - 2:05

distance = 35

time 40

40

__

60

=2

__

3

speed = disance

-----------

time

35

-----

40

=

0•875

= 35 mutiply 2.

-----------------

3

= 23•33333333333