There are two stations X and Y, 1320 km apart. A train starts from station X at 6 a.m. and moves at an average speed of 60 km/hr. At 2 p.m. another train starts from Y towards X and moves at an average speed of 80 km/hr. When do they meet?
- A. 6 p.m.
- B. 7 p.m.
- C. 8 p.m. ✓
- D. 9 p.m.
Correct Answer: C. 8 p.m.
Explanation
By 2 p.m. (8 hours later), train X has travelled 60 \times 8 = 480 km. Remaining distance = 1320 - 480 = 840 km. Relative speed = 60 + 80 = 140 km/hr. Time to meet = \frac{840}{140} = 6 hours after 2 p.m., which is 8 p.m.
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