A few days ago
Anonymous

the ratio of the number of all the students(freshmen, sophmores, juniors, and seniors)

at the university to the number of members at the university is 15:1. there are 663 freshmen and 179 faculty members.how many members are not freshmen?

can someone help and explain how to do it?

A few days ago
original_pet

Ok, the problem gave you a ratio in this form:

Total Students : Faculty

15 : 1

Then it continued on and said that there are 663 freshmen and 179 faculty. First, we are going to have to use the 179 faculty members in the ratio:

Total Students : Faculty

15 : 1

Total Students : 179

Remember that the original ratio says that for every 1 faculty member there are 15 students. So, if we had 2 faculty members we’d have 30 students. And if we had 3 faculty we’d have 45 students. And 4 students would be (4 * 15 =) 60 students… so what about 179 students? Well… 179 * 15 = 2685. So now are ratio becomes:

Total Students : Faculty

15 : 1

2685 : 179

Now we know total students is 2685 so we use subtraction to remove the freshmen:

2685 – 663 = 2022

There are 2022 students that are not freshmen.

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A few days ago
chickachickawhat
I think you do 179*15 because that would get you the total number of students – then divide 663 by the number you just found and that gives you the % of students that are freshmen – then just turn that into a ratio
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A few days ago
lilkrazyme3
you have to put it into fraction form for it to be easier…

15 over 1 and X over 179.. then you cross- multiply which gives you…

15 x 179= X

then you subtract 663 from X

and that gives you the answer… 2022

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