SOLUTION: Can someone please help? The number N of aluminum can used each year varies directly as the number of people P using the cans. If 57 people 19,893 cans in one year, how many ar

Question 396096: Can someone please help?
The number N of aluminum can used each year varies directly as the number of people P using the cans. If 57 people 19,893 cans in one year, how many are used in a city which has a population of 1,329,0007.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I use what is called a "constant of proportionality" called
I write an equation:

This is read as " The number of people is proportional to
the number of cans.
given:

----------------
Now I can write:

4,638,260,217 cans are used
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