Question: 
A man buys 20 pens and 10 books for Tk 400. He sells pens at a profit of 40% and books at a profit of 25%. If his overal profit was Tk. 112, the cost price of a book is (in Tk.)-
40
32
32
24
30
Answer: 
32
Last Updated: 
08/11/2021 - 03:30