Let's denote the mass of plums produced by each plum tree in 2019 as x kg.
According to the given information, in 2020 each plum tree produced 37.7 kg of plums, which was 16% more than in 2019.
Mathematically, we can express this relationship as:
x + 0.16x = 37.7
Simplifying, we get:
1.16x = 37.7
To solve for x, we can divide both sides of the equation by 1.16:
x = 37.7 / 1.16
Using a calculator, we find:
x ≈ 32.6724
So, the mass of plums produced by each plum tree in 2019 was approximately 32.6724 kg.