Financial Maths, STD2 EQ-Bank 01 MC

Jacinta buys several items at the supermarket. The docket for her purchases is shown below.

What is the amount of GST included in the total?

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$A$

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$\text{Total price of taxable items}\ +\ 10\%\ \text{ GST}\ =1.29+7.23+4.13=$12.65$

$\therefore\ 110\%\ \text{of original price}$	$=$12.65$
$\therefore\ \text{GST}$	$=$12.65\times\dfrac{100}{110}$
	$=$1.15$

$\Rightarrow A$

\(\therefore\ 110\%\ \text{of original price}\)	\(=$12.65\)
\(\therefore\ \text{GST}\)	\(=$12.65\times\dfrac{100}{110}\)
	\(=$1.15\)