Pens that used to cost Tk. 150 for a package of 3 now cost Tk. 300 for a package of 5. What is the percent increase in the price of these pens?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
1 (20%)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Original cost: Tk. 150 for a package of 3 pens.
Cost per pen originally: Original cost per pen = 150/3 = Tk. 50 per pen
New cost: Tk. 300 for a package of 5 pens.
Cost per pen now: New cost per pen=300/5 = Tk. 60 per pen
Increase in cost = 60 - 50 = Tk. 10 per pen
Percent increase = (10/50) × 100 = 20%
