Discuss Forum
1. A man buys pen at the rate of Tk.420 per 100 pieces and sells them at Tk.60 per dozen. If the profit is Tk.100, how many pens did he buy?
- A. 100
- B. 100
- C. 100
- D. 100
Answer: Option B
Explanation:
The cost price of 100 pens = TK. 420 Cost price of 1 pen = TK. (420/100) = TK. 4.2 Selling price of 1 dozen pens = TK. 60 Selling price of 1 pen = TK. (60/12) = TK. 5
Profit per pen = Selling price per pen - Cost price per pen = TK. (5 - 4.2) = TK. 0.8
Let the number of pens bought be x Total profit = TK. 100
Profit per pen × number of pens = Total profit TK. 0.8 × x = TK. 100 x = (TK. 100)/(TK. 0.8) = 125
Therefore, the man bought 125 pens.
Post your comments here: