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 15000 sheets of xerox paper? Select:
A) $1250  B) $700  C) $1350  D) $900  E) $1000
30 sec approach - solve it using approximation   15000 sheet at full price, 5 cent = 750   15000 sheet at max discount price, 4 cent = 600   Your ans got to be between these two.   Ans $700 it is.
<result>B</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 15000 sheets of xerox paper?