Question

Zahra runs an activity club

She needs 2 members of staff for every 15 people at the activity club.
There will be 90 people at the activity club on Monday
Zahra has 10 members of staff available for Monday.
Does Zahra have enough staff available for Monday?
(3)​

Answer 1

No, Zahra does not have enough staff available

Explanation:

Given

`Ratio = 2 : 15` --- staff to people

`Staff = 10`

`People = 90`

Required

Are there enough staff?

Start by representing the data as a ratio

`Ratio = Staff : People`

So, we have:

`Ratio = 10 : 90`

Divide by 10

`Ratio = 1 : 9`

Multiply by 2

`Ratio = 2 : 18`

This means that, she has 2 members of staff for every 18 people (instead of the expected 2 to 15 people)

Hence, Zahra does not have enough staff available