Question

in a certain school 20%of students are below 8 years age .the number of students above 8 years of age is 2/3 of the number of students of 8 years of age which is 48 .what is the total number of students in the class​

Answer 1

Answer:

Let the total number of students be x.

Percentage of students below 8 years=20%

Number of students of 8 years of age =48

Number of students above 8 years of age=

$= > \frac{2}{3} \times 48$

$= > 2 \times 16$

$= > 32 \: students$

Number of students above 8 years of age= 32

Number of students which are 8 years old and above 8 years old= 48+32=80

Percentage of students which are 8 years old and above 8 years old=100%-20%

=80%

$= > x \: of \: 80\% = 80 students$

$= > x \times \frac{80}{100} = 80$

$= > x \times \frac{4}{5} = 80$

$= > x = 80 \times \frac{5}{4}$

$= > x = 20 \times 5$

$= > x = 100 students$

:.The total number of students in the class =x=100 students.

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Answer 2

no. of students are.........