Good evening
Answer:
Step-by-step
let c be the total number of cartoons
Cost of purchase = 50c
total sale price = 100(c-15)
profit = total sale price - cost of purchase
= 100(c-15) - 50c = 2250 cents
Then (100c-50c) - 1500 = 2250
then 50c = 3750
Then c = 3750/50 = 75
:)