The cost C, in dollars, to remove p percent of a certain pollutant from a pond is estimated by using the formula C = 100,000p/(100 - p). According to this estimate, how much more would it cost to remove 90 percent of the pollutant from the pond than it would cost to remove 80 percent of the pollutant?
Pick one.
A) $500,000	B) $100,000	C) $50,000	D) $10,000	E) $5,000
Cost to remove 90% - Cost to remove 80% = 100,000*90/(100 - 90) - 100,000*80/(100 - 80) = 9*100,000 - 4*100,000 = 5*100,000 =500,000   $500,000nswer: $500,000
<result>A</result>
The cost C, in dollars, to remove p percent of a certain pollutant from a pond is estimated by using the formula C = 100,000p/(100 - p). According to this estimate, how much more would it cost to remove 90 percent of the pollutant from the pond than it would cost to remove 80 percent of the pollutant?