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77julia77 [94]
3 years ago
15

72% of 25 students of a class are good in mathematics. how many are not good in maths in that class?

Mathematics
2 answers:
Nata [24]3 years ago
8 0
72% of 25=18
25 there are
18 are good at math
7 aren't good at math
hjlf3 years ago
6 0
First you need to calculate how many student is good at math, and that is by knowing how many student forms the 72% of the class total number.
This is by multiplying the total number of the students by the percentage that are good at math.
25* \frac{72}{100} =18
So 18 students are good at math.
So the rest, which are not good at math, are equal to;
25-18=7
The answer is 7.
Hope this helps!
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