<PRE><B>Question 926253</B>
Mr.Cruz bought 40 copies of books that was billed 15,000 and she plans to buy six additional copies. How much the cost of each additional copy of the books that she paid?
------
Use a proportion::
x/6 = 15000/40
-----
x = 6*1500/4
---
x = (3/2)1500
----
x = 2250
-------------
Cheers,
Stan H.
--------------</PRE>