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I Suck At Math: Decalculating Quebec Sales Tax
Good [+1]Toggle ReplyLink» cutterhead replied on Sun Jan 31, 2010 @ 10:52pm
cutterhead
Coolness: 131595
Originally Posted By EL_PRESIDENTE

Actually I want to de-calculate the tax.

I already know the amount of the total with tax. I want to find out the sub-total by using the total


lol it was clear from the start , makes me laugh at the answers im reading...

Originally Posted By flo
I see there are some calculus geniuses in here :P

^^^^^^^^^^THIS LOLOLOLL!!!1111ON3

Wally is right: you're looking for the price X before the tax (say, 7%) was applied, which gave 1.07*X ; Let Y be that total price (12$ in your original example), so Y = 1.07*X, hence X = Y/1.07

That's assuming Quebec's tax is applied last (which I've never known); if not, apply this division twice.


kudos

yea , say [YOURREALTOTALWITHTAXES] is x

X / 1.075 [REMOVES TVQ] is y

Y / 1.07 [REMOVEs TPS] is z

z is your original price
Update » cutterhead wrote on Sun Jan 31, 2010 @ 10:54pm
... and i know it obvious , but it only works in that order ...
I'm feeling tarfu right now..
Good [+1]Toggle ReplyLink» Kishmay_Pinas replied on Mon Feb 1, 2010 @ 12:04am
kishmay_pinas
Coolness: 103255
tps c'est pas 1.05 maintenant?
I'm feeling cuck my sock right now..
Good [+1]Toggle ReplyLink» Screwhead replied on Mon Feb 1, 2010 @ 12:09am
screwhead
Coolness: 685590
yup, tps is 5% not 7%
I'm feeling like a drama magnet right now..
Good [+1]Toggle ReplyLink» cutterhead replied on Mon Feb 1, 2010 @ 5:33am
cutterhead
Coolness: 131595

As of January 1, 2008, the GST rate is 5%.


yea my bad , its been at 7% for ever

as for PST its still the same old 7.5%

[ en.wikipedia.org ]
Quebec 7.5
* Provincial rate is nominally 7.5%, but also applied to federal 5% GST. Effective provincial rate is 7.875%


anyways , thanks you guys just made me realised not only i was wrong for the last 2 year or so on my tax report. good thing i didnt bill the customers , just gave a lot away to the federal...

2x 2% ...damned
I'm feeling tarfu right now..
I Suck At Math: Decalculating Quebec Sales Tax
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