Question

(4 marks)
4." The odomoter of a car reads 573210 km when the clock shows the time 08.30 AM. What is the
distance moved by the car, if at 08.50 AM, the odometer reading has changed to 57336.0 km?
Calculato the speed of the car in km/min during this time. Express the speed in km/h also.​

Answer 1

Answer:

45km/hr

Explanation:

distance=57336.0km-57321 km=15Km

speed in km/hr=3/4*km/hr*60min/hr=(15*3)km/hr

=45km/hr

Answer 2

Answer:

0.75 km/min and 2700 km/h

Explanation:

Initial reading = 57321 km

Final reading = 57336

So, distance traveled, s = final reading - initial reading

= 57336 - 57321 = 15 km

Initial time = 8:30 AM

Final time = 8:50 AM

So, time for which the car traveled, t = 20 min

Now, speed in km/min = s/t = 15/20 = 3/4 = 0.75 km/min

To change it to km/hrs, multiply it by 3600.

So, speed in km/h = 0.75 * 3600

= 3*3600/4

= 3*900

= 2700 km/h

HOPE IT HELPS..

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