For this case we have that the complete question is:
A spider ate 25% more bugs this month than last month. The spider ate 8 bugs last month. How many bugs did the spider eat this month?
So, we propose a rule of three:
8 bugs -----------> 100%
x -----------------------> 25%
Where the variable "x" represents the number of bugs equivalent to 25%.
![x = \frac {25 * 8} {100}\\x = 2](https://img.qammunity.org/2021/formulas/mathematics/college/r1pz2e0325f8aou17jshyd1csy2ct4qtmi.png)
Thus, 2 bugs represent 25%
If this month the spider ate 25% more, then it ate:
![8 + 2 = 10](https://img.qammunity.org/2021/formulas/mathematics/college/3bdjdtvmx22zpumjtldcx7l7gvzkefcutx.png)
Answer:
This month, the spider ate 10 bugs