Answer:
Let suppose the value of property is 100 dollars currently.
The price of a certain property increased by 10% in the first year, means the value of property at this point is (100 *1.1) 110 dollars.
In the second year the value of property decreases by 20% mean the value of property at this point is (110*0.80) 88 dollars, that is 80% of previous value determine.
In the third year the value of property increases by 25% mean the value of property at this point is (88*1.25) 110 dollars that is 25% more than previous value determine.
So in second year the value in dollars is 88 dollars.