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john: 30julia: 40.good one!:)
This is a very tough one. I cannot quite distinguish all of the premises.Great to have you back blogging!!!
Julia John(Ju + Jo)/2 <==> Jo - Ju/2 + Jo/23Jo -Ju <==> -2Ju + 4 Jo = Ju1) 3Ju = 4JoJo = Ju - Jo/2 + 5 <==> Jo/2 + 52) 3/2Jo-Ju = 5Ju = 40Jo = 30
I needed a lot of baby steps to figure this one out, but I did it! First I made my own typographical representation:J=D":(J"=2(D':J'=((D+J)/2))))and D=J'':(D''=(D+10)/2)This exactly corresponds to the sentences as phrased in the riddle. I then realized that I could get rid of the colon relationship by using the simple equation J=x+D. This unchanging difference between their ages would help me negotiate all those past and future ages. In the end I had these four equations that I could easily solve through substitution. 1)D'= (D+J)/2 - x <--These first two were the first typographical string broken up.>2)J = 2D' - x3)J = x+D4)D = (D+10)/2 + x
dead by the time i figure it out
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