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When the partners withdraw different amounts of money at different time intervals, the interest is calculated using the following formula:

Solution

✅ Correct Option: 4

Unequal amounts withdrawn at irregular intervals require the product method. Each drawing is multiplied by the months it remains outstanding, and interest == Sum of products ×Rate100×112\times \frac{Rate}{100} \times \frac{1}{12}. The average period shortcut of 612\frac{6}{12} applies only to equal, regular drawings.

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