Question

At an university 70% of the students who attend stay on campus. If 1,380 of the students who attend live off campus, what is the total number of students who attend the university?

Answer 1

4600

Explanation:

We can write a proportion to find the total amount who attend university using the information given. A proportion is two equivalent ratios set equal to each other. Since 70% live on campus, then 30% live off campus and we are told that number is 1,380.

`(30)/(100)=(1380)/(y)`

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.

30y=100(1380)

30y=138000

y=4600.

There are 4600 students who attend the university.