Michael V. answered 03/13/19
Instructor of the Year and Certified Master Training Specialist
Solomon,
Pretend you had a $5 bill on a table in front of you. That bill represents one week of savings.
Now pretend you put another $5 bill next to the first one. This second bill represents the amount you saved in the second week.
So if you saved $5 the first week, and $5 the second week, you would have $10. Now picture that but with 25 $5 bills instead to two.
You can get your answer by adding $5 + $5, + $5...25 times, or the quicker way is to multiply $5 times 25 to get $125.