Part A
Total amount Logan has = $63
Cost of pack of the card on the advertisment=$1.75
Therefore the number of packs logan can buy:
number of cards = Total amount Logan has/ Cost of pack of the card on the advertisement

In conclusion, the number of cards logan can buy using the cost on the advertisement is 36 packs
Part B
Since the cost of the packs differ at the store we would use the same formula above but with a different cost
number of cards = Total amount Logan has/ Cost of pack of the card at the store

In conclusion, the number of cards logan can buy by using the cost at the store is 42 packs