How problems have to be understood to be ordenated properly

 This problem are write not in the sequency to make the rationalization, so is need understand to understand what is process an what is production.

Twenty men asphalt 10 km of road in 6 days. In how many days did 30 men asphalt 30km of road?

So is mix process and production but process of one side of the equitity and production of the other side:

20 men x 6 days = 10km

I m saying that 20 men in 6 days do that, what is the secret?

Can someone got confused and think : 20 men x 10km = 6 days?

And is only that? Of course another factors contribute but they are all ignored in the question.

What I want discover: 30 men x Xdays = 30km.

Making the 3 rule write 20men x 6 days = 10km over 30 men x X days = 30km, multiply crossed the the equitities and had ythis: X = 12.

Rute Bezerra de Menezes Gondim

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