Final answer:
To solve the problem, let x be the number of seedlings on the first plot. The equation x - 30 = 3x + 10 is formed and upon solving, it reveals that there were 40 seedlings on the first plot and 120 on the second.
Explanation:
To solve the problem:
- Let x be the number of seedlings on the first plot.
- Then, the number of seedlings on the second plot is 3x (as it was three times more).
- With the given conditions, the equation becomes x - 30 = 3x + 10.
- Solving the equation, you find that there were 40 seedlings on the first plot and 120 seedlings on the second plot.
Learn more about Solving a mathematical problem about seedlings on different plots here:
https://brainly.com/question/20390346