Two card are moving in the same direction with the same speed of ` 30 km h^(-10` at a distance of ` 5km` from each other . A third car moving in the opposite direction meets these two card at an interval of `4` minutes. Find the speed of third car.

Explanation

To solve the problem, we need to find the speed of the third car that is moving in the opposite direction to the two cars that are moving in the same direction.

### Step-by-Step Solution:

1. **Identify the Given Information:**
- Speed of the first and second car: \(30 \, \text{km/h}\)
- Distance between the two cars: \(5 \, \text{km}\)
- Time interval between the third car meeting the first and second car: \(4 \, \text{minutes}\)
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