The Cash Register Riddle Confusing the Internet: What’s the Real Dollar Loss?

A deceptively simple cash register puzzle has been sparking heated arguments across the internet. People read it, feel confident for about five seconds, and then suddenly the numbers start to blur. Before long, commenters are fighting over whether the store lost $200, $170, or $130.

What makes this brain teaser so effective is that it pushes you into a common mental trap: counting the same money twice. It’s not advanced math—it’s basic cash flow logic, the kind used in everyday business accounting and retail loss prevention.

The Riddle Scenario (Read Carefully)

Here’s what happens:

• A man sneaks into a store and steals a $100 bill from the cash register.
• Later that day, he comes back and buys $70 worth of merchandise.
• He pays using the same stolen $100 bill.
• The cashier accepts it and gives him $30 in change.

So the big question is: How much did the store actually lose?