Question

2\3 of the pupils in class 4 took part in the school quiz.There were 18 pupils from class 4 who took part in the school quiz .how many pupils were in class 4

Answer 1

Step-by-step explanation:

let the total number of students in class 4th= x

$number \: of \: students \: who \: took \: part = \frac{2}{3} \: of \: x \\ = \frac{2x}{3} \: students \\ and \: total \: number \: of \: students \: \\ who \: took \: part = 18 \: students \\ \frac{2x}{3} = 18 \\ x = \frac{18 \times 3}{2} \\ x = 9 \times 3 \\ x = 27$

hence total number of students= x= 27 students

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