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The problem in the image is in Indonesian, and here's a translation and summary of the question:

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**Problem:**

Eko applies for financing credit for a shop that he bought at a price of 500 million rupiah. He makes a down payment of 250 million rupiah and will repay the remainder within 18 months. If the bank's interest rate is 12%, how much must Eko pay each month?

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### Solution:

1. **Price of the shop** = 500 million rupiah
2. **Down payment** = 250 million rupiah
3. **Remaining balance** = 500 million - 250 million = 250 million rupiah
4. **Interest rate (annual)** = 12% (or 1% per month)
5. **Duration** = 18 months

Since this is an installment loan, we can calculate the monthly payments using the formula for an amortized loan:

\[
M = \frac{P \cdot r(1+r)^n}{(1+r)^n - 1}
\]

Where:
- \( M \) = monthly payment
- \( P \) = loan principal = 250 million rupiah
- \( r \) = monthly interest rate = 12% annually / 12 months = 1% = 0.01
- \( n \) = number of months = 18

Let's calculate the monthly payment.Eko must pay approximately **15,245,512 rupiah** each month for 18 months to repay the loan.

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Do you have any questions or would you like more details on the calculation?

Here are 5 related questions you could explore:
1. How would the monthly payment change if the interest rate were 10% instead of 12%?
2. What would happen to the total amount paid if the repayment period were extended to 24 months?
3. How much total interest would Eko pay by the end of the loan?
4. How much would the monthly payment be if Eko had made a down payment of 300 million instead?
5. What is the effect of increasing the interest rate by 1% on the total amount repaid?

**Tip:** When repaying loans, the longer the duration, the more interest you end up paying.

Eko applies for financing credit for a shop that he bought at a price of 500 million rupiah. He makes a down payment of 250 million rupiah and will repay the remainder within 18 months. If the bank's interest rate is 12%, how much must Eko pay each month?

Learn how to calculate monthly payments for a 250 million rupiah loan at 12% interest over 18 months. This problem involves key concepts in loan amortization and interest calculations. Suitable for students in Grades 10-12.

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