Question 1148986
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a)
Option 2 gives you two pizzas for 2($18.00) = $36.00.
Option 1 gives you two pizzas for the price of 1.6 pizzas, which is 1.6*$24.99.  We only care which deal is better, so we don't need an exact number here; 1.6*$25.00 is a good approximation. 1.6*$25.00 = $40.00.<br>
So Option 2 is much the better deal.<br>
b)
$36.00, plus (.05) times $36.00, plus (.08) times $36.00.  (Assuming both the GST and PST apply to the whole $36....)<br>