Answer :
a) To determine the value of the 3rd promissory note, we need to calculate the remaining amount to be paid after deducting the advance payment.
The price of the workstation is 500,000 TL, and the company has given 250,000 TL in advance. So, the remaining amount to be financed is 500,000 TL - 250,000 TL = 250,000 TL. Since the remaining amount will be financed over 25% interest, we need to calculate the interest amount for 6 months. The interest rate is 25%, which can be expressed as 0.25. So, the interest for 6 months would be 0.25 * 250,000 TL = 62,500 TL. Therefore, the total amount to be paid at the end of 6 months would be the principal (250,000 TL) plus the interest (62,500 TL), which is 312,500 TL. This would be the value of the 3rd promissory note.
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