Question

In a class 3/5 of students are girls and rest are boys.if 2/9 of girls and 1/4 of boys are absent.what part of thr total no. Of students are present

Answer 1

let the total number of students be '90'

then girls will be 3/5 th of 100 = 54

then boys will be 90 - 54 = 36

out of 54 girls ...2/9th are absent ...54*2/9 = 12

out of 36 boys ..1/4th are absent ....36*1/4= 9

total no.of absentees = 12 + 9 = 21

total no.of students present = 90 - 21 = 69

then the part of students present in the class will be 69/90 = 23/30

Answer 2

let the total number of students be '90'

then girls will be 3/5 th of 100 = 54

then boys will be 90 - 54 = 36

out of 54 girls ...2/9th are absent ...54*2/9 = 12

out of 36 boys ..1/4th are absent ....36*1/4= 9

total no.of absentees = 12 + 9 = 21

total no.of students present = 90 - 21 = 69

then the part of students present in the class will be 69/90 = 23/30