X takes 3 hours more than Y to walk 30km. But, if X double his pace, he is ahead of Y by `1/(12)hou r s` . Find their speed of walking.

Explanation

To solve the problem, we need to find the speeds of X and Y based on the information given. Let's denote the speed of X as \( x \) km/h and the speed of Y as \( y \) km/h.

### Step 1: Set up the equations based on the problem statement.

1. **First Equation**: X takes 3 hours more than Y to walk 30 km.
- The time taken by X to walk 30 km is \( \frac{30}{x} \) hours.
- The time taken by Y to walk 30 km is \( \frac{30}{y} \) hours.
- According to the problem, we can write the equation:
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