The original price of a Skyworth color TV set is 4000 yuan. The shopping malls carry out promotional activities, first raise the price by 1 / 10, and then reduce the price by 1 / 10, How much is the current price of this color TV set?

The original price of a Skyworth color TV set is 4000 yuan. The shopping malls carry out promotional activities, first raise the price by 1 / 10, and then reduce the price by 1 / 10, How much is the current price of this color TV set?

[4000×(1+0.1)]×0.9=3960