How much is the original price of a commodity?

How much is the original price of a commodity?


198 (1-10%) = 220 yuan
220 (1 + 10%) = 200 yuan
A: the original price of this product is 200 yuan



The original price of a certain brand of computer is 6000 yuan. During the summer vacation, the price is reduced by 1 / 10. How much is the current price of this kind of computer?


1 / 10 times 6000 = 600 yuan
6000-600 = 5400 yuan a: the current price of this kind of computer is 5400 yuan



The original price of a computer is 6000 yuan, but the current price is 5700 yuan. What's the price reduction?


300 out of 6000, and then multiplied by 100%, can't do the problem, quickly look at the after-school guidance materials