Question

Help I don’t understand how to solve word problems. Answer is not 3/8=21/y

Answer 1

`(3)/(11)=(21)/(y)`

Explanation:

3 boys -> 8 girls -> 11 students

21 boys -> _____ -> y students

This information is lined up for you to solve for your number of students, y:

Looking vertically you could say the proportion is:

`(3)/(21)=(11)/(y)`

Looking horizontally you could say the proportion is:

`(3)/(11)=(21)/(y)`

There are other ways to write this but this last one I wrote answers your question.