Yeah guys take it easy. This is a confusingly interesting question that's why I shared it with you. In fact it is a really stupid question. What if the cashier had given back say 8 dollars and the assistant put in two dollars in his pocket and gave each person two dollars back? Then since they got back 2 dollars it would have cost them 8 dollars per drink. 8 x 3 = 24. The assistant took 2 dollars. So the total is only 26 dollars where did the 4 dollars go? Yes I admit it was a stupid question but it reminds us the beauty and importance of paradigm shift. The whole paradigm was shifted from the cashier to the assistant and the customers when the cashier gave the cash to the assistant. Reality was that the cashier always had the 'missing' amount

Raascal you are wrong. I never lied when I said their drink cost 9 dollars each after they got a dollar back each. For them it did. Think about it. They paid 10 dollars initially and they got back a dollar each. So they paid 9 dollars each for their drink.

They paid 9 dollars each so total cash that's out = $27
The cashier had = $25
The assistant had = $2
Makes sense = yes!

So Raascal = wrong!

Eyefusion, your logic is correct but the cost to the customer was $9 each, however the PRICE (that was charged by shop) was $8.3333 each