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For a field trip, 4 chaperones are needed for every 18 students. How many chaperones are needed if there were 81 students

1 Answer

5 votes

Answer:

18 chaperones

Explanation:

Given:

4 chaperones are needed for every 18 students.

We need to find the number of chaperones for 81 students.

Solution:

first we find chaperones for each student.

For 18 students = 4 chaperones

For each student =
(4)/(18)

Divided by 2 both numerator and denominator.

For each student
=(2)/(9)

So,
(2)/(9) chaperones for each student

But we need to find for 81 students, so chaperones For 81 students
= number\ of\ students* chaperones\ for\ each\ student


=81* (2)/(9)


=9* 2


= 18\ chaperones

Therefore, 18 chaperones are needed for 81 students.

User Rapscallion
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