If you solve this in 10 seconds, you're a genius. What is Rick's weight?

 Here is the step-by-step solution to the puzzle:

Here is the step-by-step solution to the puzzle:

 1. First Image: • 3 × Morty = 90 kg • Morty = 90 / 3 = 30 kg 

 2. Second Image: • (2 × Morty) + (1 × Jerry) = 110 kg • (2 × 30) + Jerry = 110 kg • 60 + Jerry = 110 kg • Jerry = 110 - 60 = 50 kg 

 3. Third Image: • (1 × Jerry) + (2 × Rick) = 120 kg • 50 + (2 × Rick) = 120 kg • 2 × Rick = 120 - 50 = 70 kg • Rick = 70 / 2 = 35 kg -----------------------------

 Answer:

 In the fourth image, only one Rick is standing on the scale. Therefore, ? kg = 35 kg