- The value of a machine depreciates every year by 10%. If its present value is rs. 38700, find its value a year ago.
- The salary of a bank clerk was incresed by 7%. If his present salary is rs. 8025, what was it before increment?
1) Suppose the value of machine one year ago is x.
Rate of depreciation every year = 10%
So, value of machine this year =
And the given present value is Rs.38700, so we have;
Therefore, the value of machine one year ago is Rs.43000.
2) Suppose the salary of bank clerk was x before increment.
Increment percentage = 7%
So, the present salary =
And the given present salary is Rs.8025, so we have;
Therefore the salary before increment is Rs.7500
Rate of depreciation every year = 10%
So, value of machine this year =
And the given present value is Rs.38700, so we have;
Therefore, the value of machine one year ago is Rs.43000.
2) Suppose the salary of bank clerk was x before increment.
Increment percentage = 7%
So, the present salary =
And the given present salary is Rs.8025, so we have;
Therefore the salary before increment is Rs.7500