Rushil and Bhanu jointly started a business with investments of ₹40,000 and ₹20,000 per month respectively. After 6 months, Rushil started investing ₹20,000 more per month in the business, but Bhanu reduces his investment to ₹10,000 per month. At the end of the year, the profit earned by the business is ₹65,000. What is the profit earned by Bhanu?
(3 Marks)