Car A and car B are moving towards each other from the distance of 3 km. Speed of car B is twice the speed of car A. What are the speeds of these two cars if cars are going to meet after 50 seconds.
(A) 40 m/s and 80 m/s
(B) 20 m/s and 40 m/s
(C) 10 m/s and 20 m/s
(D) 30 m/s and 60 m/s
(E) None of the above
Distance between two cars = 3 km = 3000 metres
Let speed of car A
m/s
Let speed of car B
m/s
Car A and car B are moving in the opposite directions. So, the relative speed
m/s
It is also given to us that two cars are going to meet after 50 seconds.
Speed
m/s
Therefore, speed of car A
m/s
And, speed of car B
40 m/s
Hence, the answer is (B).
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