The original price of a commodity is 100 yuan. After the price is reduced by 1 / 10, the price is increased by 1 / 10. How much is the current price? Note that there is no yuan after 1 / 10

The original price of a commodity is 100 yuan. After the price is reduced by 1 / 10, the price is increased by 1 / 10. How much is the current price? Note that there is no yuan after 1 / 10

100*1/10=10 100-10=90 90*1/10=9 90+9=99

The price of a certain commodity is 100 yuan. After 10% price reduction, it will be 10% price reduction. The sales volume will soar. The shopping mall decides to increase the price by 20%. What is the price of this commodity after the price increase?

100*0.9*0.9*1.2=97.2

The price of a kind of household appliance was raised by 10% at first and then decreased by 10%. What's the price now?
The price of a household appliance was raised by 10% and then decreased by 10%

Set the original price as "1"
Current price = (1 + 10%) × (1-10%) = 99%
Now the price is 99% of the original

What is the percentage of a commodity that should be reduced in order to recover its original price after a 25% price increase?

25%÷(1+25%)=20%
So we should reduce the price by 20%