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if you received and repaid a loan and the total repayment was $900, including 10% or $100 interest paid, what was the principal amount of the loan?

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Final answer:

The principal amount was calculated by subtracting the interest paid ($100) from the total repayment ($900), resulting in a principal amount of $800.

Step-by-step explanation:

To find the principal amount of the loan, we need to remove the interest paid from the total repayment amount. The total repayment was $900, which included a 10% interest, and we were told the interest amount was $100. We can therefore calculate the principal by subtracting the interest from the total repayment:

Principal = Total repayment - Interest
Principal = $900 - $100
Principal = $800

The principal amount of the loan was $800.

User Torben Klein
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