Delhi is at a distance of ` 200 km` from Ambla. (A) sets out from Ambala at a speed of ` 30 km h^(-1)` and (B) sets out at the same time from Delhi at a speed of `20 k h^(-1)` . They will meet each other after a time of .

Explanation

To solve the problem of when A and B will meet, we can follow these steps:

### Step 1: Understand the problem
We have two individuals, A and B, starting from two different locations: Ambala and Delhi, which are 200 km apart. A is traveling towards Delhi at a speed of 30 km/h, while B is traveling towards Ambala at a speed of 20 km/h.

### Step 2: Determine the relative speed
Since A and B are moving towards each other, we can find their relative speed by adding their speeds together:
- Speed of A = 30 km/h
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