A deceptively simple math riddle is spreading across the internet and sparking intense debate, with people confidently arriving at completely different answers. At first glance, it looks like an easy arithmetic problem, but many quickly discover that their first instinct leads them astray.
The scenario goes like this: a thief steals a $100 bill from a store. Later, he returns and buys $70 worth of goods using that same stolen $100 bill. The cashier gives him $30 in change. The question is: how much money did the store actually lose?
What makes this puzzle so controversial is the way it confuses people by mixing theft, purchase, and change into a single narrative. Many try to calculate it step by step, double-counting the money or getting distracted by the sequence of events. Online discussions often split between answers like $130, $170, and $200, showing how easily the story can distort simple reasoning.
The correct way to understand it is to separate emotion and story from actual loss. The stolen $100 is eventually returned to the register when it is used for payment, meaning it cancels itself out in the final accounting. What the store truly loses is only what leaves permanently: $70 in merchandise and $30 in cash.
When you focus only on the final outcome—what physically left the store—it becomes clear that the total loss is $100.
In the end, this puzzle isn’t about advanced math at all. It’s about resisting mental distractions and tracking what actually changes hands. The confusion comes from the story, not the numbers.
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