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.

$\frac{30}{100}=\frac{1380}{y}$

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.

7 0

2 years ago

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Aleks04 [339]

Answer:

Step-by-step explanation:

Substitute the given values for x and y into the expression

5 × ( $\frac{60}{6(5)}$ ) - 1

= 5 × ( $\frac{60}{30}$ ) - 1

= (5 × 2) - 1

= 10 - 1

= 9 → C

4 0

2 years ago