If xerox paper costs 5 cents a sheet and a buyer gets 10% discount on all xerox paper one buys after the first 2000 papers and 20% discount after first 10000 papers, how much will it cost to buy 20000 sheets of xerox paper?	Answers.
A) $1250  B) $1060  C) $1350  D) $900  E) $1000
30 sec approach - solve it using approximation   20000 sheet at full price, 5 cent = 1000   20000 sheet at max discount price, 4 cent = 800   Your ans got to be between these two.   Ans $900 it is.
<result>D</result>
If xerox paper costs 5 cents a sheet and a buyer gets 10% discount on all xerox paper one buys after the first 2000 papers and 20% discount after first 10000 papers, how much will it cost to buy 20000 sheets of xerox paper?