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Answer:
To solve this problem, let's denote the amount of money you had at first as "x".
According to the information given:
- You spent half of your money and P 10 more, which means you spent (0.5x + 10).
- After spending that amount, you had P 30 left.
We can set up the equation based on the given information:
x - (0.5x + 10) = 30
Solving this equation:
x - 0.5x - 10 = 30
0.5x - 10 = 30
0.5x = 40
x = 40 / 0.5
x = 80
Therefore, you had P 80 at first.