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The students to faculty ratio at a small college is 17:3. The total of total if student and faculty is 740. How many faculty members are there at the college? How many students?
So, the ration is 17:3, you know that. Therefore, the change from # of students to the 17 is the same change as # teachers to 3. Knowing this, you also know that the total # of people ihas the same change as the total ratio. So 17+3 = 20. 740/20 = 37. So the change is 37. 3x37= 111 17x37=629 You can check to make sure this answer is correct by adding the two final numbers. 111+629 = 740. (Some find it easier to see lined up really pretty) 17 -- 3 total 20 x -- y total 740 Or, if you are visual, look at the picture I drew:
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