Courier charges for packages to a certain destination are Tk. 95 for the first 300 grams and Tk 10 for each additional 100 grams or part thereof. What could be the weight in grams of a package for which the charge is Tk. 165?

Question: Courier charges for packages to a certain destination are Tk. 95 for the first 300 grams and Tk 10 for each additional 100 grams or part thereof. What could be the weight in grams of a package for which the charge is Tk. 165?Solution:Let the additional is 100x grams Additional 100 grams requires Tk.10 ∴ Additional 100x grams requires Tk. (10 × 100x)/100 = Tk. 10xATQ, 95 + 10x = 165⇒ 10x = 70 ∴ x = 7∴ The additional weight = 100 × 7 = 700 grams∴ Total weight will be = 700 + 300 = 1000 grams