Can ZP calculate percentages?

[shabbysquire]

Would like to know how to get ZP to calculate percentages. i.e. I need to take a price, then add, say, 13.5% to the total.

Is this possible?

 

[lokiys]

Any math is possible mate.

Price = 100 Eur
Add = 13%

Final = 100 x 0.13 = 13 Eur = 100 + 13 = 113 Eur

Answer final price with 13% added will be 113 Eur in this case

Cheers

 

[VladZen]

double price= 200;
double percent =13.5;
double total = price+price*percent/100;
return total;

 

[shabbysquire]

double price= 200;
double percent =13.5;
double total = price+price*percent/100;
return total;

Thanks man, that works a treat!

Just one more question. Once I've use the c# to calculate the %, how do I add, say, £5 to the sum (which action)? I'm not familiar with maths in ZP!

 

[VladZen]

That's just the same as in C# programming language. Something like that - http://stackoverflow.com/questions/10416553/string-format-currency

 

[shabbysquire]

Sorry, I don't mean to add the currency; just add 5 to the percent total.

 

[shabbysquire]

Vlad; that solution that you gave me is causing major bugs in my template. When I delete the c#, everything works as normal.

I'm gonna stick this into bugs section.

 

[VladZen]

Vlad; that solution that you gave me is causing major bugs in my template. When I delete the c#, everything works as normal.
I'm gonna stick this into bugs section.

There is nothing that can cause bugs... Please give the details. What errors you get.

 

[shabbysquire]

I've added it here.

 

[VladZen]

Sorry, I don't mean to add the currency; just add 5 to the percent total.

double price= 200;
double percent =13.5;
double total = price+price*percent/100+5;
return total;

 

[shabbysquire]

Many thanks, has done the job!

 

[ssXXXss]

..

int price = int.Parse(project.Variables["price"].Value);
return price*13.5/100+price;

 

[shabbysquire]

Ok, just to add additional elements to the above:

Item price = 15.00;
My profit margin = 5.00;

So total of above: 20.00

Then to add in the following:
ebay fees = 10%
Paypal fees = 3.4% + 0.20;
Total =

 

[VladZen]

I suppose it should be like this:

double price= 200;
double percent =13.5;
double total = price+price*percent/100+5; // calculating price+percent+profit margin
double extratotal = total+0.1*total+0.034*total+0.2; // calculating total price+ebay fee+paypal fee
return extratotal;

 

[ssXXXss]

..

int price= 200;
double total = price+price*13.5/100+5;
return total+0.1*total+0.034*total+0.2;

 

[shabbysquire]

Ok, I messed around with it (I don't know c#!), but I came up with this:

double price= double.Parse(project.Variables["amazon_price"].Value); //Amazon item price
double profit = 5.0;  // My profit margin
double ebay = 10.00;  // ebay's final  selling fees (%)
double paypal = 3.4+0.20; // Paypal fee of 3.4% and 0.20
double total = price+price*ebay*paypal/100+profit; // calculating price+percent+profit margin
return total;

The amazon product price is: £15.39 with my £5 profit.

Then add ebay fee at 10%, and Paypal fee at: 3.4 + 0.20. The total is supposed to be: £17.63, but my alteration to the code job shows: £18.90.

Can anyone see the mistake in the code?

Btw, I need to keep everything in the above format, as sometimes ebay/paypal fees change (so I can simply change it quickly!)
Thanks.

 

[lokiys]

Most probably problem is there double paypal = 3.4+0.20; // Paypal fee of 3.4% and 0.20

As I see there is percents added to cents.
And another thing is you have to know what % counts first, because if you add 10% first and then 3,4% after that or 3,4% first and 10% after that then result will be different also...

 

[shabbysquire]

Ok, so you mention possible double paypal, so I've added to ebay as a total of: 13.4:

double price= double.Parse(project.Variables["amazon_price"].Value); //Amazon item price
double profit = 5.0;  // My profit margin
double fees = 13.4;  // ebay's 10%, and Paypal's 3.4% (the 20p part of Paypal is in total)
double total = price+price*fees/100+profit+0.2; // calculating price+percent+profit margin, and 20p part for the Paypal fee
return total;

But now the calculation is off; supposed to be £17.63, but this displays: £16.98.

 

[lokiys]

this code return 22,65226 for me, what is same for me when calculating manual way