At a certain college, there are 7 men for every 5 women. If there are 380 more men than women, what is the total enrollment?

Respuesta :

Or 
Men - 420 = Women 

Take (Men) / (Women) for each proportion... 

7 / 5 = M / (M - 380) 

Cross multiply: 

5 M = 7 (M - 380) 
5 M = 7 M - 1900 
-2 M = - 1900
M = 950

W = M - 380
W = 950 - 380 = 570
M + W = total enrolled
950 + 570 = 1520

The total enrollment of men and women at the college is; 2280

We are told that there are 7 men for every 5 women.

Thus, let men be represented by m and women represented by w.

Thus;

m/w = 7/5

Thus;

m = 7w/5

Now, there are 380 more men than women. Thus;

m = w + 380

Thus;

w + 380 = 7w/5

Cross multiply to get;

5w + 1900 = 7w

7w - 5w = 1900

2w = 1900

w = 1900/2

w = 950

Thus;

m = 950 + 380

m = 1330

Thus,

Total enrollment = 1330 + 950

Total enrollment = 2280

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