Answer:
b. Store B
Step-by-step explanation:
For store A the final price for 12 packs of paper is:
= 12 packs × $3/pack = $36
For store B:
In order to get 12 packs from the special you must by 4 specials because you buy two and get one free which means you get 3 packs with each special. Therefore:
= 4 × 2×($4.20) = $33.6
Therefore option b from store B is the best price because it is $2.4 cheaper than option a from store A