Question

School guidelines require that there must be at least 2 chaperones for every 25 students going on a school trip. How many chaperones must there be for 53 students?

2 chaperones
27 chaperones
4 chaperones
5 chaperones

Answer 1

there must be at least 5 Chaperones

Answer 2

We can use ratio and proportion to find the number of chaperones

Let
`x` represent the number of chaperones.

Number of Students Number of Chaperones

25 2

53
`x`

If 25 corresponds to 2, then 53 will correspond to a value more than 2. If more, less divides, hence

`x=(2 *53)/(25)`

`x=(106)/(25)`

`x=4.24`

Since humans are whole entities, we round up to the nearest whole number which is 5.

The point is that we are dealing with humans and 4.24 means 4 chaperones plus 0.24 chaperone. since we cannot add 0.24 of the next chaperone to the 4, we add one full chaperone.

So there are at least 5 chaperones