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 Question from anne, a parent: i have a total amount15.81.i need to find out the amount of gst(5%) and the pst(7%) that i paid within that amount of 15.81

Anne,

The total tax is 12% so if you knew the price before tax then

1.12 × price = $15.81. Turning that backwards then$15.81/1.12 = price

so

price = $14.12. Hence the tax was$15.81 - $14.12 =$1.69.

The GST is then 5/12 × $1.69 =$0.70 and the PST is $1.69 - 0.71 =$0.99.

I hope this helps,
Penny

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