3  72% of 25 students are interested in mathematics. How many are not interested in mathematics?

 

Answers (1)

Given;

72% of 25 students are interested in mathematics

\therefore Percentage of students not interested in mathematics = (100 - 72)% = 28 %

\therefore The number of students not interested in mathematics = 28% of 25

=\frac{28}{100}\times25 = \frac{28}{4}

= 7

Therefore, 7 students (out of 25) are not interested in mathematics.

 

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