Student
766 Points
Joined February 2009
As per your question, Formula for calculating depreciation rate is:
![\mbox{depreciation rate} = 1 - \sqrt[N]{\mbox{residual value} \over \mbox{cost of fixed asset}}](https://upload.wikimedia.org/math/1/a/c/1ac2d7a708f0eda3b7206d259d63c0a0.png)
Residual Value = Rs. 5000
Cost of Fixed Asset = Rs. 100000
N = 6
So, we have to calculate 6th root of 5000/100000 i.e. 0.05
Step 1
Press ROOT button twelve times.
Resulting figure: 0.99926888743
Step 2
Deduct 1 from Resulting figure in Step 1
Resulting figure: -0.00073111257
Step 3
Divide Resuting figure in Step 2 by 6 (Six)
Resulting figure: -0.00012185209
Step 4
Add 1 to resulting figure in Step 3
Resuting figure: 0.99987814791
Step 5
Now, press 'x' and then '=' in combination, 12 (Twelve) times
Resulting Figure: 0.6070545673
Step 6
Now as per formula of calculating depreciation rate
![\mbox{depreciation rate} = 1 - \sqrt[N]{\mbox{residual value} \over \mbox{cost of fixed asset}}](https://upload.wikimedia.org/math/1/a/c/1ac2d7a708f0eda3b7206d259d63c0a0.png)
Deduct resulting figure in Step 5 from 1 (One)
{You may put resulting figure in Step 5 in 'M-' and Then, press 1 and put it in 'M+'. Then press 'MR' button. You will get answer by this.)
ANSWER: 0.3929454327 OR 39.30% approx