Question

if the number of students passing an examination test is ⅔ of the number that appears.

please do the process in step by step​

Answer 1

Step-by-step explanation:

Given

Number of students appeared exams =400

(2/3) of total boys and all 130 girls passed in the examination

Hence,

Number of total boys =400−130

=270

Number of boys passed =(2/3) of 270

=(2/3)×270

=180

So, number of boys failed =270−180

=90

Hence, 90 boys failed in an examination

Answer 2

Step-by-step explanation:

Given

Number of students appeared exams =400

(2/3) of total boys and all 130 girls passed in the examination

Hence,

Number of total boys =400−130

=270

Number of boys passed =(2/3) of 270

=(2/3)×270

=180

So, number of boys failed =270−180

=90

Hence, 90 boys failed in an examination