SOLUTION: There are 45 students in a math 101 class. The instructor notices that there are half as many women as there are men. How many of each gender are in the class?

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Question 305800: There are 45 students in a math 101 class. The instructor notices that there are half as many women as there are men. How many of each gender are in the class?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
m+%2B+w+=+45
w+=+%281%2F2%29%2Am
m+=+2w
By substitution:
2w+%2B+w+=+45
3w+=+45
w+=+15
and
m+=+2w
m+=+30
there are 30 men and 15 women