After covering a distance of 30km with a uniform speed there is some defect in a train engine and therefore, its speed is reduced to 4/5 of its original speed. Consequently, the train reaches its destination late by 45 minutes. Had it happened after covering 18 kilometres more, the train would have reached 9 minutes earlier. Find the speed of the train and the distance of journey.

Explanation

To solve the problem step by step, we will define the variables and set up equations based on the information provided in the question.

### Step 1: Define Variables
Let:
- \( x \) = original speed of the train (in km/h)
- \( y \) = total distance of the journey (in km)

### Step 2: Set Up the First Condition
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