Answer:
...x = the number of memories to print
Shop A charges a setup fee of $40 for preparing souvenirs and $2.50 per souvenir to be printed
cost = 2.5x+40
Shop B charges a setup fee of $55 for preparing souvenirs and $2 per souvenir to be printed.
cost: 2x+55
If the total cost is the same for each company, how many souvenirs does the company print?
2.5x+40=2x+55
2.5x-2x=55-40
0.5x=15
x=15/0.5=30
the company prints 30 souvenirs