Explanation:

- Let's distribute the profit first. The total profit is Rs99,000.

- The ratio of the partners is 6:4:1, so let's determine the shares.

- X's share: 6/11 X 99,000 = Rs54,000

- Y's share:4/11 X 99,000 = Rs36,000

- Z's share: 1/11 X 99,000 = Rs9,000

- Z is guaranteed Rs15,000. So, A makes up for the shortfall  15,000 - 9,000 = Rs6,000.

- X guarantees Z, so A's profit is reduced to accommodate this.

- X's original share of profit was X's, since it isn't explicitly mentioned that A is separate from X.

- Correct amount for X's share: Rs54,000- Rs6,000 = Rs48,000

- Answer: Option:3 - Rs48,000