If the price of an item increases from Tk. 25 to Tk. 28, the old price is what % of the new price?
সমাধান
সঠিক উত্তর: Option C
When new price is 28 tk, old price is 25 tk
When new price is 100 tk, old price is 25*100/28 tk
= 89.29 tk or 89.29%
