The file contains various remedial math problems related to topics such as simple and compound interest, loan repayments, and annuities. These questions seem to be targeting students in grade XII and focus on financial mathematics concepts, including calculating interest, loan repayments, and time periods for loans or savings.

Here is a breakdown of one of the problems:

Example: Hana menabung uang sebesar Rp500.000 dengan suku bunga tunggal sebesar 55% per tahun yang dibayarkan setiap 6 bulan sekali. Berapakah saldo tabungan Hana jika dia mengambil uangnya setelah 42 bulan?

To solve this, we can use the simple interest formula:

$A = P \left(1 + \frac{rt}{100}\right)$

Where:

• $A$ is the amount after interest
• $P = 500,000$ (principal)
• $r = 55\%$ (rate of interest)
• $t = \frac{42}{12} = 3.5$ years

Let me know if you need solutions for this problem or others in the file.

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Related questions:

1. How is compound interest different from simple interest?
2. What is the formula to calculate loan payments under annuity systems?
3. How do interest rates impact savings growth over time?
4. What role does time play in the calculation of total interest on a loan?
5. How can we compare the total payments made under simple vs. compound interest systems?

Tip: Always double-check if the time units (months/years) are consistent before applying the interest formula.