Two cars, X and Y, start from points 360 km apart and travel at constant speeds. If they move towards each other, they meet in 4 hours. If they move in the same direction, they meet in 12 hours. What is the speed of car X? (Assume X is the faster car.)

Question

Apedia · Accepted Answer

Correct Answer: 60 km/h.

Explanation: X+Y = 360/4 = 90. X-Y = 360/12 = 30. 2X = 120 => X = 60....

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Two cars, X and Y, start from points 360 km apart and travel at constant speeds. If they move towards each other, they meet in 4 hours. If they move in the same direction, they meet in 12 hours. What is the speed of car X? (Assume X is the faster car.)