Question

72% OF 25 STUDENTS ARE GOOD IN MATHEMATICS. HOW MANY ARE NOT GOOD IN MATHS​

Answer 1

No of students =25

72%=72/100 ×25= 18

so, no of students good in mathematics is 18

:. No of students not good in mathematics = 25-18 =7

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Answer 2

$\large\bold{\underline{\underline{{Question:-}}}}$

• 72% of 25 students are good in mathematics. How many are not good in math in percentage?

$\large\bold{\underline{\underline{{Given:-}}}}$

• Total number of students = 25
• Percentage of students good at math =72%

$\large\bold{\underline{\underline{{To\:Find:-}}}}$

• Percentage of students not good at math.

$\large\bold{\underline{\underline{{Solution:-}}}}$

$\red{★}$Percentage of students not good at maths  + Percentage of students good at maths = 100.

$\pink{↬}$Percentage of students not good at maths + 72 = 100.

$\green{↬}$Percentage of students not good at maths = 100 - 72 = 28

▪️Thus, Percentage of students not good at maths = 28%

▪️Now,

$\purple{↬}$72 × 25/100 = 18

▪️So, Number of students good at maths = 18

$\blue{★}$Students not good in maths = Total number of students -Number students good in maths.

$\orange{↬}$Students not good at maths = 25 - 18 = 7

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