Question

18. Rajat drives his car at a constant speed. If he travels 20km 500m in 15 minutes. Find the speed
of his car.

82 km/hr
92 km/hr
74 km/h
80 km/hr​

Answer 1

Answer:

82 km/hr is the correct answer

Step-by-step explanation:

Answer 2

Answer:

If a car travels 20km 500m in 15 minutes, then the speed of the car is 82 km/h

Step-by-step explanation:

• The speed of a moving body is defined as the total distance covered with respect to time

• For a body that covered a distance $d$ within a time, $t$ the speed of that body is

                     $v=d/t$

From the question, it is given that

speed of the car is $v=200km 500m=20.5km$

time taken to cover this distance $t=15mnts=15/60hrs=0.25hr$

so the speed of the car be calculated by substituting these values in the above equation, we get

$v=20.5/0.25=82km/h$