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 Question from Patric, a parent: If I know only the tax amount, how do I figure out total cost?

Hi Patric,

I assume you know the tax rate and since you are in BC I assume the tax rate, PST and GST combined, is 12%. Suppose the cost before tax was $\$x$and the tax you paid was$\$t.$ Since the tax rate is 12% you know that 12% of $\$x$is$\$t.$ Thus

$0.12 \times \x = \t.$

Dividing both sides by 0.12 gives

$\x = \frac{\t}{0.12}.$

I hope this helps,

Penny

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