A train traveling at 70 km/h crosses another train traveling in the same direction at 34 km/h in 25 seconds. What is the combined length of both the trains (in metres)?
This questions was previously asked in
Combined Graduate Level Examination Tier I 2023
Explanation:
- Let's first find the relative speed between the two trains. The faster train is going at 70 km/h, and the slower one at 34 km/h.
- So, the relative speed = 70 - 34 = 36 km/h.
- Convert this speed into meters per second: \(36 \times \left(\frac{1000}{3600}\right) = 10\) m/s.
- The trains take 25 seconds to cross each other at this relative speed.
- Therefore, the combined length of both trains is \(10 \, \text{m/s} \times 25 \, \text{s} = 250\) meters.
- Now, let's evaluate the options:
- Option 1: 225
- Option 2: 250 (matches the calculation)
- Option 3: 325
- Option 4: 500
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By: Parvesh Mehta