Let \(x\) be the number of fruit-bearing trees planted by the students.
According to the question, the number of non-fruit-bearing trees is \(1+2x\).
Total number of trees = 100
Number of fruit-bearing trees + number of non-fruit-bearing trees = 100
\(\Rightarrow x+(1+2x)=100\)
Solving this equation to get the value of \(x\)
\(\Rightarrow3x+1=100\\
\Rightarrow3x=100-1=99\\
\Rightarrow x=\dfrac{99}{3}=33\)
The number of fruit-bearing trees is 33.
Number of non-fruit-bearing trees \(= 1+2x =1+2\times33=1+66=67\) The number of non-fruit-bearing trees is 67.