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## #1 2016-10-20 15:10:27

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,239

Mr. Denis has 5 goats with the average weight 36 kg while Mr. Joppy has 5 goats with the average weight 34 kg. If they exchange one of their goats so that their overall average weight is equal, what is the weight difference of their switched goats? I only know that Mr. Denis' goats' total weight is 180 kg and Mr. Joppy's is 170 kg. How to do it from there?

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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## #2 2016-10-20 19:00:55

bob bundy
Registered: 2010-06-20
Posts: 8,371

hi Monox D. I-Fly

I agree the totals are 180, and 170.  To end up equal, they must each be 175.  So one weight must go down by 5 and the other up by 5.

Bob

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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## #3 2016-10-21 19:03:55

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,239