The original price of a certain commodity is 100 yuan. After 10% price increase, the price will be reduced by 10%. How much is the current price?

The original price of a certain commodity is 100 yuan. After 10% price increase, the price will be reduced by 10%. How much is the current price?

The original price is 100 yuan. After 10% increase, the price is: 100 (1 + 10%) = 110 yuan. On the basis of 110 yuan, the price will be reduced by 10%. The current price is: 110 (1-10%) = 110 × 90% = 99 yuan. Answer: the current price is 99 yuan

The original price of a garment is 100 yuan. First, the price is increased by 10% and then decreased by 10%. How much is the current price? How much is it equivalent to the original price?

After the price increase, it is 110, the price decrease is 11, and the current price is 99, which is equivalent to 99% of the original price

If you want to restore the original price after a 100% price increase, you should reduce the price ()
A. 30%B. 50%C. 75%D. 100%

Suppose the price should be reduced by X, then we get the equation: (1 + 100%) (1-x) = 1, the solution is: x = 50%, a: the price should be reduced by 50%

If you want to restore the original price after a 10% price increase, you should reduce the price ()
A. 10%B. 9%C. 1009%D. 10011%

Then: 1 × (1 + 10%) (1-x) = 1, the solution is: x = 111 = 10011%