Explanation:

- Let's denote A's income and expenditures as 6x and y, and B's income and expenditures as 11x and 2y.

- A's savings: 6x - y = Rs 9,000.

- B's savings: 11x - 2y = Rs 11,500.

- Solving these two equations:

1) 6x - y = 9,000

2) 11x - 2y = 11,500

- Solve equation 1) for y:

y = 6x - 9,000

- Substitute y in equation 2):

11x - 2(6x - 9,000) = 11,500

11x - 12x + 18,000 = 11,500

-x = -6,500

x = 6,500

- Calculate B's expenditure:

B's income = 11x = 11 * 6,500 = Rs 71,500

B's savings = Rs 11,500

B’s expenditure = 71,500 - 11,500 = Rs 60,000

- Option 4: Rs 60,000 is correct.