Answer:
They should save around 25% of their paycheck every week (assuming they get paid every week) and never touch it. Let's say they get paid $100 per week. If they save 25%, they'd have to take away 25 dollars from their paycheck and survive the rest of next week on $75. After 7 weeks, they would have $175 dollars. And it would just keep multiplying.
Explanation:
