Someone came into my shop and stole $100.00 from the register without my knowledge. the person came back in with the same $100.00 five minutes later and he bought $70.00 worth of items and gave him back $30.00 in change. how much money did i lose?

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho