Problema Solution

Lady steals $100 bill from store. She comes back 5 mins later and buys $70 worth of goods with the $100 bill. The owner gives her back $30 in change. How much did the owner loose?

Answer provided by our tutors

The owner lost $100 when she stole the bill, then he provided $70 worth of goods. 

100+70

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170

So he lost $170, but he lost a lot more than money.