Multiple Choice
A factory is polluting a river such that at every mile down river from the factory an environmental expert finds 20% less pollutant than at the preceding mile. If the pollutant's concentration is 700 ppm (parts per million) at the factory, what is its concentration 15 miles down river?
A) 140.00 ppm
B) 300.00 ppm
C) 24.63 ppm
D) 875.00 ppm
E) 30.79 ppm
Correct Answer:
Verified
Correct Answer:
Verified
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