Question 1195052
A boy bought 200 books .he sold 80 of books at a profit 15% and the remaining ones at a profit of 50% he realized rs.27200 in total .what was his cost of books?
-------------
C = cost
80*(C*1.15) + 120*(C*1.5) = 27200
92C + 180C = 27200
272C = 27200
etc
=========================
Mathtutor's answer and mine are the same.
Mine shows 100 per book ---> 20000.