Final answer:
To find the number of years it takes for the value of the apartment flat to reach a certain amount using compound depreciation, we need to use the formula: P = P0 * (1 - r)^t. Rearranging the formula allows us to solve for t. Substitute the given values to find the number of years.
Step-by-step explanation:
To find the number of years it takes for the value of the apartment flat to reach Rs.1257728, we need to use the formula for compound depreciation. The formula is given by:
P = P0 * (1 - r)t
Where:
- P is the present value (Rs.1257728)
- P0 is the initial value of the flat
- r is the rate of compound depreciation per year (given in the question)
- t is the number of years we want to find
We can rearrange the formula to solve for t:
t = log1-r(P/P0)
Substituting the given values into the formula, we can calculate t.