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See more: C# mathematics
I created a function that will return the VAT percentage from Total and VAT amount..
My Function is :-
public decimal vatRsToPer(decimal vatAmt, decimal totalAmt)
                decimal rupees;
                rupees = decimal.Multiply(vatAmt, 100m);
                rupees = decimal.Divide(rupees, totalAmt);
                return rupees;
            catch {
                return 0m;

Problem is, suppose the total amt is "2400.00" and VAT% is "4", that means the VAT Rupees is "96.00"..
If i want to get the percentage of the VAT from that VAT rupees "96.00" and Total rupees "2496.00"(which is including VAT rupees). then my function return "3.85" not "4"..
Please Help me, Where I did wrong....

Every Suggestion will be appreciated...
Posted 2-Apr-13 4:04am
ryanb31 2-Apr-13 9:09am
Are you saying you want to round up?
Jayanta Chatterjee 2-Apr-13 9:13am
No no...
I Solved it.
Just added this line at the top:-
totalAmt = decimal.Subtract(totalAmt, vatAmt);
Thanks for quick reply...
Kenneth Haugland 2-Apr-13 9:16am
Em, I might have gotten this wrong but if you have Price + VAT than you have 104 % of the total price. MEaning 2496/1.04 = 2400 and (2496/104)*4=96.
Jayanta Chatterjee 6-Apr-13 12:09pm
Thanks for Your suggestion...
Its good..

1 solution

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Solution 1

Please Help me, Where I did wrong....
rupees = decimal.Divide(rupees, totalAmt);

Should be:
rupees = decimal.Divide(rupees, totalAmt-vatAmt);
Jayanta Chatterjee 2-Apr-13 9:14am
Thanks Sir.....
CPallini 2-Apr-13 9:18am
You are welcome.

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