The price of commodity X increases by 40 paisa every year, while the price of commodity Y increases by 15 paisa every year. If in 2001, the price of commodity X was Tk. 20 and that of Y was Tk. 30, in which year commodity X will cost 40 paisa more than commodity Y?
সমাধান
সঠিক উত্তর: Option B
Suppose commodity X will cost 40 paise more than Y after z years.
Then, (4.20 + 0.40z) - (6.30 + 0.15z) = 0.40
