Question

80% OF 40 STUDENTS ARE GOOD IN MATH HOW MANY ARE NOT GOOD AT MATH

Answer 1

Given:-

• Total no. of students↝40

• Percentage of students who are good at Mathematics↝80%

To find:-

No. of students who are not good at Mathematics

Solution:-

• No. of students who are good at Mathematics↝

percentage(%) of total number of students

∴ 80% of 40

⇒ 80/100 × 40

⇒ 4 × 8

⇒ 32

∴ No. of students who are good at Mathematics is 32

• No. of students who are not good at Mathematics↝

total - students who are good at maths

∴ 40 - 32

= 8

∴ No. of students who are not good at Mathematics is 8

Answer:-

8 is the answer

Answer 2

Answer:

8 students

Step-by-step explanation:

$\rightarrow$ Percentage of students good in maths = 80%

$\rightarrow$ Percentage of students not good in maths= 20%

$\rightarrow$ Number of students not good in maths

$= 20\% \times 40 \\ \\ = \frac{20}{100} \times 40 \\ \\ = \frac{800}{100} \\ \\ = 8$

So, 8 students are not good in maths.

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Answer obtained respectively.