+2407 w = # of women
m = # of men
Mr. Li is a man.
He shook hands with m - 1 men.
He shook hands with w women.
3w = m - 1
Mrs. Li is a women.
She shook hands with m men.
She shook hands with w - 1 women.
4(w-1) = m
3w = m - 1
4(w-1) = m
4w - 4 = m
3w = (4w - 4) - 1
w = 5
3(5) = m - 1
m = 16
16 + 5 = 21
=^._.^=
+2407 w = # of women
m = # of men
Mr. Li is a man.
He shook hands with m - 1 men.
He shook hands with w women.
3w = m - 1
Mrs. Li is a women.
She shook hands with m men.
She shook hands with w - 1 women.
4(w-1) = m
3w = m - 1
4(w-1) = m
4w - 4 = m
3w = (4w - 4) - 1
w = 5
3(5) = m - 1
m = 16
16 + 5 = 21
=^._.^=
+129899 Thanks, catmg!!!!!.....I wanted to try this one, as well
M -1 = men's hands that Mr. Li shook
M -1 = men's hands that Mr. Li shook
W -1 = women's hands that Mrs. Li shook
M = men's hands that Mrs. Li shook
So
(M - 1) / W = 3 ⇒ M - 1 = 3W ⇒ M = 3W + 1 (1)
M / (W -1) = 4 (2)
Sub (1) into (2)
(3W + 1) / (W - 1) = 4
3W + 1 = 4 (W - 1)
3W + 1 = 4W - 4
5 = W
3(5) + 1 = M = 16
M + W = 16 + 5 = 21 (just as catmg found !!!)
+118687 Attn: mworkhard,
I know you are a valuable member of the forum and maybe I should keep my thoughts to myself......... but really ...
The heading 'quick' Come on! Why did you need to sound so demanding?
Then.
"thats wut i got just checking!!"
No "thank you." no "I wanted to see if there was a better way to do it"
Did you even look at catmg's or CPhill's working?
You gave your question a point but you did not give a point to either answerer.
I suppose any response is better than no response but you're better than this!
+515 Melody,
Thanks, I guess i was just in a rush. (I really don't know how to respond to this)
+118687 For starters, you were supposed to respond with a direct thank you to Catmg and to CPhill. (not to me)
And give both of them a point, which you have done, thanks 
Then I was hoping you would think about the wording of future posts with regard to what I have said to you.
You do not need to respond again unless you want to.
