The first offer is better from the perspective of a customer but the second one is better from the perspective of a seller.
Here we have different 2 cases, and to find the answer we have to follow a few steps.
First of all, we should simplify these two cases and will try to give them a proper equation format.
Let's assume the price of each yogurt is $x.
Therefore the total price of 2 pots is (2× x) = $2x.
But the condition is if we buy 2 pots, get the 3rd one for free. So, we can purchase a total of 3 pots at the same cost.
∵ If 3 pots cost $2x, then the average cost for each pot is 2x/3 =$0.67x
( average value of each unit = Total value / total unit )
In the second case, if we buy 1 pot we can get the second one at half price.
Therefore, the total price of two pots is, ( x + 0.5x ) = $1.50x
∵ If 2 pots cost $1.50x, then the average cost for each pot is 1.50x/2 = $0.75x
( average value of each unit = Total value / total unit ).
The price of yogurt per pot in the first case < The price of yogurt per pot in the second case.
As $0.67 < $0.75.
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