Total drawings during the year = Rs. 3,000 × 12 months = Rs. 36,000
Since the withdrawals are made at the beginning of each month, the average period for which the drawings remain with the partner needs to be calculated.
For equal withdrawals at the beginning of each month, the average period is calculated as:
Average Period = 2(n+1) months
where n = number of months = 12
Average Period = 2(12+1) = 213 = 6.5 months
Interest on Drawings = Total Drawings × Rate of Interest × 12Average Period
Interest on Drawings = Rs. 36,000 × 1009 × 126.5
= Rs. 36,000 × 0.09 × 0.5417
= Rs. 1,755
The formula uses (n+1)/2 instead of n/2 because withdrawals at the beginning of the month mean each withdrawal is with the partner for a longer period compared to withdrawals made at the end of the month.
Correct Option: 2 (Rs. 1,755)