Interview Question Regarding Stock Return

Hey, not sure if this is the right section to post this question in, but worth a shot. I got an interesting interview question recently and was just wondering if my answer was right.

Question: If a $10 stock issues a $2 dividend, and then it appreciates 50% over the next year, what is your return?

My answer: After the $2 dividend, the stock price would drop to $8. Then a 50% appreciation would cause the price to be $12 next year. So your total return would be 40% (the $2 dividend, and $12 - $10 = $2 increase from the purchase price).