Some kind of computer is now sold at 20% discount, which is 600 yuan cheaper than the original price. How much is the original price of this kind of computer? What's the current price?

Some kind of computer is now sold at 20% discount, which is 600 yuan cheaper than the original price. How much is the original price of this kind of computer? What's the current price?

A: the original price is 3000 yuan, the current price is 2400 yuan