Explanation:

- Rahul bought 120 tables for Rs56,500.

- 70 tables have an average price of Rs450.

- Total cost for these 70 tables is 70 * 450 = Rs31,500.

- Total cost for the remaining 50 tables is Rs56,500 - Rs31,500 = Rs25,000.

- Average price for these 50 tables is Rs25,000 / 50 = Rs500.

Option: 1, Rs500

- The average price for the remaining 50 tables is Rs500.

- This matches the calculated average price.

Option: 2, Rs550

- Would make the total cost higher than Rs56,500, which is incorrect.

Option: 3, Rs460

- Would make the total cost lower than Rs56,500, which is incorrect.

Option: 4, Rs480

- Also results in a total cost lower than Rs56,500, which is incorrect.

Option: 1, Rs500 is the correct answer.