Final answer:
The sales manager's annual income is Rs 348000.
Step-by-step explanation:
To find the sales manager's annual income, we need to add the fixed salary to the commission earned from sales. The fixed salary is Rs 4000 per month. The commission is 5% of the total sales.
Step 1: Calculate the commission earned from sales. In this case, the total sales amount is Rs 6000000, so the commission is 5% of Rs 6000000, which is Rs 6000000 * 0.05 = Rs 300000.
Step 2: Add the fixed salary and the commission earned. The annual income is the sum of the fixed salary and the commission. In this case, the annual income is Rs 4000 * 12 (months) + Rs 300000 = Rs 48000 + Rs 300000 = Rs 348000.