Gas station ripoff
Three petrol station pumps are shown with the amount of fuel and price being shown. Which of these gas pumps are trying to rip you off?
An animated graph shows that for pump 1 the relationship between quantity of fuel and price is non-linear, and this is the one that is trying to rip you off.
A picture is shown some packs of pain relief tablets. There are four different sizes of pack, with prices displayed. Which pain reliever is the best deal?
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