A car travels from A to B at the rate of 10 km/hr but it comes back at the rate
of 20 km/hr. Find the average speed of the car.
Answers
Answered by
0
Let the distance between A and B is x km.
Speed of the car from A to B(u) = 10 km/hr.
Therefore,
time(T1) = x/10
Also,
Distance between B and A = x km.
Speed of the car from B to A(v) = 20 km/hr.
time(T2)= x/20
Thus,
total time = T1 + T2
= x/10+ x/20= x/30hr
total distance covered by the car = x + x = 2x
Using Formula,
Average Speed = Total distance/Total time
= 2x/(x/30)
= 15 km/hr.
Thus, average speed of the car is 24 km/hr.
Answered by
1
Answer:
15km/hr
Step-by-step explanation:
average speed=total distance/2
=10+20/2
=30/2
=15km/hr
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