SOLUTION: the ratio of number of men and women who attended a meeting is 3:5 after sometime half the men and one-third the women left .What is the new ratio of men and women?

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Question 766769: the ratio of number of men and women who attended a meeting is 3:5 after sometime half the men and one-third the women left .What is the new ratio of men and women?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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the ratio of number of men and women who attended a meeting is 3:5
after sometime half the men and one-third the women left .
What is the new ratio of men and women?
:
If 1/3 left, then 2/3 remain, therefore:
:
%28%281%2F2%29%2A3%29%2F%28%282%2F3%29%2A5%29 = %28%283%2F2%29%29%2F%28%2810%2F3%29%29
invert the dividing fraction and multiply
%283%2F2%29 * %283%2F10%29 = 9%2F20
The new ratio is: 9:20