Posted by Kai on Saturday, December 17, 2011 at 11:40pm.
Correction of problem submiited earlier.
The amount P of pollution varies directly with the population N of people. City A has a population of 494,000 and produces 260,000 tons of pollutants. Find how many tons of pollution we should except City B to produce if population is 344,000. Do not round until final answer, then round to nearest ton as needed

math  drwls, Sunday, December 18, 2011 at 4:52am
Is "except" supposed to be "expect".
OK, so P = C N where C is a constant
This implies
Pb/Pa = Nb/Na
The subcripts denote cities A or B
Pb = Pa*(Nb/Na)
= 260,000*(344/494)= 181,053 tons

math  Kai, Sunday, December 18, 2011 at 8:55am
it is expect. thanks
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