Imtiaz gets 25 rupees commission on an article sold for rupees 2000. What percent of the selling price is the original price of the article?
We define "original price" as the price paid to the author. Thus, the ratio is
That's a pretty good mark-up!
"Percentage" means amount "per cent". or per 100 (from the Latin). A ratio is any mathematical division of two terms, which may be expressed as fractions or decimal numbers. Expressed as decimal numbers they are always 'normalized' to '1'. Thus, to get the equivalent number "per 100" we multiply that decimal value by 100.