Explanation:

- Let's break down the equation step by step to find the value of '?':

- 240 ÷ 6:

- Compute: 240 divided by 6 equals 40.

- v529:

- The square root of 529 is 23.

- v529 × 17:

- Multiply: 23 times 17 equals 391.

- Left side of the equation:

- Add: 40 plus 391 equals 431.

- So, 240 ÷ 6 + v529 × 17 = 431.

- 150% of 80:

- Calculate: 150% of 80 equals 120. (1.5 times 80)

- Right side of the equation:

- '? + 120'

- Equal both sides:

- 431 = ? + 120

- Subtract 120 from both sides to find '?'.

- 431 - 120 equals 311.

- Solution:

- The value for '?' is 311.

- Correct Answer:

- Option 1: 311