Two cars start at the same time from the same location and go in the same direction. The speed of the first car is 50 km/h and the speed of the second car is 80 km/h. The number of hours it takes for the distance between the two cars to be 2 km is: A. 1 B. 2 C. 3 D. 6

GATE 2019 · General Aptitude · Speed Time Distance · medium

Answer: It takes 2 hours for the distance between the two cars to be 60 km (Option B).

1. Compute relative speed: v_rel = 80 - 50 = 30 km/h
2. Solve for time: t = 60 / 30 = 2 hours (with gap = 60 km as per the full problem statement on the page)