Question

A 3 pack of boxes of juice costs $1.09.A 12 pack of boxes costs $4.39. A case of 24 boxes costs $8.79. Which is the best buy? explain your reasoning.

Answer 1

Answer:

3 pack of boxes of juice costs $1.09

Step-by-step explanation:

Given,

Case 1 : Number of packs of juice = 3,

Price = $ 1.09,

So, the price of juice per pack = $\frac{1.09}{3}$ ≈ $ 0.3633,

Case 2 : Number of packs = 12,

Price = $ 4.39

So, the price per pack = $\frac{4.39}{12}$ ≈ $ 0.3658

Case 3 : Number of packs = 24,

Price = $ 8.79,

So, the price per pack = $\frac{8.79}{24}$ ≈ $ 0.3663

∵ 0.3633 < 0.3658 < 0.3663

Hence, 3 pack of boxes of juice costs $1.09 is best to buy.

Answer 2

The answer is the pack of 3 boxes of juice as 12 is 4 times 3 so $1.09 will need to be multiplied by 4. This equals $4.36. So the 12 pack is 3c more expensive. Same goes with the 24 pack, which equals $8.78. This is 1c more expensive. So the cheapest is the 3 pack of juice boxes. 
I hoped this helped!! :))