Question

of which is
70% of 20 students are good in mathematics. How many students are not good in
mathematics?​

Answer 1

Answer:

6 students are not good at mathematics.

Explanation:

ATQ,

30% of students are not good at mathematics.

So 30% of 20 is 30×20/100 = 6

So, the answer is 6.

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Answer 2

I hope this will help you...