25 there are
18 are good at math
7 aren't good at math
This is by multiplying the total number of the students by the percentage that are good at math.
So 18 students are good at math.
So the rest, which are not good at math, are equal to;
The answer is 7.
Hope this helps!
this is correct because:
this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.