1. **Problem statement:** A man wants to obtain an annual income of Rs. 900 from shares having a face value of Rs. 50 but currently selling at Rs. 60. The dividend declared is 15%. Find how much he should invest. 2. **Understanding the problem:** Dividend rate = 15% on the face value = 15% of Rs. 50 = $0.15 \times 50 = 7.5$ Rs per share annually. 3. **Calculate number of shares needed:** Annual income desired = Rs. 900 Each share gives Rs. 7.5 income Number of shares $= \frac{900}{7.5} = 120$ shares 4. **Calculate the total investment:** Shares are selling at Rs. 60 each Total investment $= 120 \times 60 = 7200$ Rs 5. **Answer:** The man should invest Rs. 7200. Hence, option 4 is correct.