Question

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

Answer 1

$\huge{\boxed{\mathfrak{\overbrace{\underbrace{\fcolorbox{r}{red}{✯Answer}}}}}}$

$\textbf{Given:}$

$\mathsf{72\%\;of\;25\;students\;are \;interested\;in\;mathematics}$

$\textbf{To find:}$

$\textsf{How many students are not interested in mathematics}$

$\textbf{Solution:}$

$\textsf{Total number of students =25}$

$\mathsf{Percentage\;of\;students \;interested\;in\;Mathematics=72\%}$

$\textsf{Percentage of students not interested in Mathematics=100\%-72\%=28\%}$

$\mathsf{Number\;of\;students\;not\;interested\;in\;mathematics}$

$\mathsf{=28\%\;of\;25}$

$\mathsf{=\dfrac{28}{100}{\times}25}$

$\mathsf{=\dfrac{28}{4}}$

$\mathsf{=7}$

$\textbf{Answer:}$

$\textsf{7 students are not interested in Mathematics}$

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Answer 2

★ Given that,72% of 25 students are interested in mathematics.

__________________________________________

$\sf\blue{To\:Find:}$ How many are not interested in mathematics?

Solution:-

$\sf \frac{72}{100} \times 25 = number \: of \: students \: intrested \\⟹ \therefore 18 \: stuents \: are \: intrested$

so,number of students not interested = 25-18

$\sf\therefore$7 students are not interested in maths

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