Math (ratios)
posted by Reese's .
At a certain college, the ratio of the men to women is 5:4. If there are 2800 men, how many women are there?

Solve this equation, with x as the number of women:
5/4 as 2800/x
Cross multiply to find your answer. 
5/4 as 2800/x
4x2800=11200/5=2240 
just cross multipy like the numbers that arr aross from each other you multipy and the answer divided by the the third number that is by its self then you will het your answer like this one
18/20 as 9/x
20x9=180/18=10