What is important about 25?
it is square
It's an easy calculation to do yourself. Just multiply 2200 by 25/100 It's important to remember that percent is an abbreviation for percentum. That means "per one hundred". When I say 25 percent that means 25 out of 100. Therefore it's a simple ratio problem. x 25 --------- = ----------- 2200 100 By algebra that equals: 100x = 25*2200 I think you can solve it from there.
Because a measurement is pointless without the unit. How would you feel if someone offered to pay you 25 per hour and then, after a day 's slog, they told you it was 25 cents an hour? If you had assumed 25 dollars that was your own fault! Or you paid a 70 centilitres bottle of wine and you were given a 70 microlitres!
English is important for communication in a clear and unambiguous manner with other people. Because of universal usage it has become the universal communications tool in the world of today. About 25% of the worlds resources is used by the Americans and it is important for the economies of all nations to trade with and therefore communicate with the Americans in English.