Rupa is a Sanskrit word. Which means that the silver coin, which we make a knock-on peat. The bar-tar system was run in Indian Valley Civilization. Bar-tar system means to take another thing in exchange for anything. As if we have more rice and we also need wheat, then we can take some wheat for the second instead of some of our rice. But in the year 1540, the Sher Shah launched Rupai for the first time. In which 1 rupee means 1 silver coin which was equal to 178 wheat grains But after the first World War, silver and gold prices increased, then the British government denominated the Indian rupee. In which now 1 rupee means 16 aana, which was equal to 64 paise. all these copper were made of nickel. But after 1961 only the rupee was made official under the INDIAN COINAGE ACT. Now 1 rupee has been equal to 100 paise, and from July 15, 2010, we changed the symbol of rupees. Apart from India, the rupee is the currency of many countries