2013 · Q37
Two cars are moving in the same direction with a speed of 45 km/h and a distance of 10 km separates them. If a car coming from the opposite direction meets these two cars at an interval of 6 min, its speed would be
general-mental-abilityquantitative-aptitude
- A45 km/h
- B55 km/h
- C65 km/h
- D75 km/h
Explanation
The oncoming car covers the 10 km gap between the two cars in 6 minutes relative to the 45 km/h stream, so 10 = (45 + v) × 6/60, giving v = 55 km/h.