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Both of my parents gave me 250$ each and now I have 500$ and then I bought a phone for 450$ and now I have 50 dollars left so i gave my friend 30 dollars because he asked. Now I have 20$ left. Since I have 20$ left I’ll give my parents 10$ each and now they want from me 240$ each and in total I have 480$ to give to my parents but my friend gave my 30$ dollars back that I gave him and now I have 510$ where did that 10$ in the 510$ come from since I only got 500$ from my parents.

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Answer:

Let's break down the transactions:

1. Your parents gave you $250 each, so you received a total of $500.

2. You bought a phone for $450, leaving you with $50.

3. You gave your friend $30, leaving you with $20.

4. You gave $10 each to your parents, leaving you with $0.

5. Your friend gave you back $30, bringing your total to $30.

6. Your parents want $240 each, which totals $480.

Let's check the math:

- Original amount from parents: $250 + $250 = $500

- Phone cost: $500 - $450 = $50

- After giving $30 to your friend: $50 - $30 = $20

- After giving $10 each to your parents: $20 - $10 - $10 = $0

- After your friend returned $30: $0 + $30 = $30

Now, let's revisit the calculation with the return of $30 from your friend:

- Total from parents: $250 + $250 = $500

- Total remaining after phone purchase: $500 - $450 = $50

- After giving $30 to your friend: $50 - $30 = $20

- After giving $10 each to your parents: $20 - $10 - $10 = $0

- After your friend returned $30: $0 + $30 = $30

In both scenarios, your total should be $30 after your friend returns the money. There doesn't seem to be an extra $10 in either calculation. It seems like everything adds up correctly.

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