Question

Out of 30 students of Mary's class, 6 of them work after school. If there are 525 students in the school, predictthe number of students who work after school,O 30O 150O 178O 105

Answer 1

We are told that, out of 30 students of Mary's class, 6 of them work after school.

Thus the ratio of students who work after school to the total students is

`(6)/(30)=(1)/(5)`

If there are 525 students in the school, the number of students who work after school should be 1/5 of this number, thus the number of students who work after school should be;

`(1)/(5)*525=105`

Thus it should be 105 students.