Answer:
The 5 bags of pretzels.
Explanation:
Because if you were to buy 5 individual bags you would end up paying $20.00, instead of $12.00
The second option
In order to find the unit price of each, consider the quotient of amount of money per bag:
Case 1:
$4/ 1 bag
Case2:
$12 / 5 bags = $2.4 / 1 bag
Therefore, the second option is the one with lower unit price.
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