Question

Okay hear this someone came into my shop and stole $100 without my knowledge they came back to the store and spent $70 in items i gave $30 back how much money did i lose ?

Answer 1

You lost $60.

-$100 + $70 - $30 = -$60

Answer 2

$30 because they stole $100, and had to of payed with $100 for the items to get $30 back ( I could be wrong )