Question

4. A credit card company charges a late fee of 25 pesos each time a customer fails to
pay on time. A customer missed the payment 4 times last year. At the customer's
request and out of courtesy, the credit card company decides to cancel all late fees
for that year. How much money was return?​

Answer 1

Answer:

The amount of late fee the bank charged last year was -25 × 4

In order to return the money, the bank can do this math: -25 × -4

Notice how the number 4 became negative. This is necessary so the amount of money the customer gets back is a positive number.