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If 40% of students are good at science out of 20 students. Then find the number of students good at science.

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answer is C.

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Detailed Solution

40% of students out of 20 $= 40 % o f 20$

$= \frac{40}{100} \times 20$

$= \frac{2}{5} \times 20$

$= 8$

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