A science museum requires 3 adult chaperones for every 15 students on a field trip. How many chaperones would be needed for a group of 125 students?

1) There are 3 adults per 15 students, so you can make a ratio 3adults/15students.

2) Next, set up the second ratio and combine where 3adults/15students = X/125students. X is the number of adults needed.
3) Arrange the equation by cross muliplying and you get 375 = 15X
4) X= 25 adults

15/3 = 1 chaperone for every 5 students.

125/5 = ? total chaperones

15/125 = 8.333 groups of 15 students

8.33 x 3 (chaperons) = 24.99 rounded 25

:-)

To calculate the number of chaperones needed for a group of 125 students, we need to use the given ratio: 3 adult chaperones for every 15 students.

Step 1: Determine the number of groups of 15 students in the larger group.
For 125 students, divide the total number of students by the group size: 125 ÷ 15 = 8.33 (approximately).

Step 2: Determine the number of chaperones for each group.
Multiply the number of groups by the number of chaperones per group: 8 x 3 = 24.

Therefore, for a group of 125 students, you would need 24 chaperones.

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