Two trains A and B each of length 200m are running on parallel tracks. A overtake B in 30s and A crosses B in 15s. What are the velocities of trains A and B?

Explanation

To solve the problem of finding the velocities of trains A and B, we can break down the information given and apply the concepts of relative velocity. Here’s a step-by-step solution:

### Step 1: Understand the Problem
We have two trains, A and B, each of length 200 meters. Train A overtakes train B in 30 seconds and crosses train B in 15 seconds. We need to find the velocities of both trains.

### Step 2: Set Up the Variables
Let:
- Velocity of train A = \( x \) m/s
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