Calculate interest on drawings of Sanjay @10% p.a. for the year ended 31st March, in each of the following alternative’s cases:
Case 1. If he withdrew Rs. 7,500 in the beginning of each quarter.
Case 2. If he withdrew Rs. 7,500 at the end of each quarter.
Case 3. If he withdrew Rs. 7,500 during the middle of each quarter.