Explanation:

- The investment ratio of Keshav, Surjeet, and Thomas is 2:3:4.

- Their time period ratio is 5:6:9.

- Their effective share ratio = (investment × time):

Keshav: 2×5 = 10

Surjeet: 3×6 = 18

Thomas: 4×9 = 36

So, their profit sharing ratio is 10:18:36.

- Total = 10 + 18 + 36 = 64 parts.

- 20% profit was spent, so 80% remains for distribution.

- Let total profit = Rs X.

Profit to divide = 0.8X

- Keshav's share = (10/64) × 0.8X

Surjeet's share = (18/64) × 0.8X

Difference = [ (18 - 10)/64 ] × 0.8X = (8/64)×0.8X = 0.1X

- Given difference = Rs 7264

So, 0.1X = 7264

? X = 72640

Options:

1. 72640

2. 46490

3. 51060

4. 58112

Correct Answer: 1. 72640