Point A and B are 90 km apart from each other on a highway. A car starts from A and another from B at the same time. If they go in the same direction they meet in 9 hours and if they go in opposite directions they meet in 9/7 hours. Find their speeds.

Explanation

To solve the problem step by step, we will first define the variables and then set up the equations based on the information given.

### Step 1: Define the variables
Let:
- \( x \) = speed of the car starting from point A (in km/h)
- \( y \) = speed of the car starting from point B (in km/h)

### Step 2: Set up the equations for the same direction
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