Two trains, each travelling with a speed of `37.5kmh^(-1)` are approaching each other on the same straingh track. A bird that can fly at 60 kmph flies off from one train when they are 90 km apart and heads directly for the other train. On reaching the other train, it flies back to the first and so on. total distance covered by the bird before trains collide is

Explanation

To solve the problem, we need to determine the total distance covered by the bird before the two trains collide. Here’s a step-by-step breakdown of the solution:

### Step 1: Determine the speed of the trains
Each train is traveling at a speed of \(37.5 \, \text{km/h}\).

### Step 2: Calculate the relative speed of the trains
Since the trains are approaching each other, we can add their speeds to find the relative speed:
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