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 80 students?

Answer 1

For every 25 students there will be 2 chaperone .
Hence for 80 students there will be = (2/25)*80 = 6.4 since it can't be in decimal we'll round off . = 6 chaperones.
Hope it helps.

Answer 2

Answer: There must be 6.4 chaperones for 80 students.

Step-by-step explanation:

Since,  at least 2 chaperones require for every 25 students,

⇒  25 students = 2 chaperones,

⇒ 1 student = $\frac{2}{25}$ chaperones,

⇒ 80 students = 80 ×  $\frac{2}{25}$ chaperones

⇒ 80 students  =  160/25 = 6.4  chaperones

Thus, at least 6.4 chaperones is required for every 80 students.