MCQ Practice Mathematics 📖 A retailer buys pens in packs of 24 for Tk. 336/ pack and then resells them in packs of 5 for Tk 80/ pack. If the retailer so... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up