# A school library needs four computer for every 7 students. If the school has 280 students, how many computers does it need?

##### 2 Answers

The school needs

#### Explanation:

School needs

#### Explanation:

We can read from this that for every group of

It will help to find out how many groups of

Each group should have 4 computers:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We can also do this by direct proportion where we compare the number of students with the number of computers.

#7x = 280 xx 4#

#x = (280 xx4)/7#

#x = 160#