Answer:
This would be a $150 increase
Explanation:
In order to find the increase in price, we need to determine the overall costs for buying and selling. In order to do that, multiply the number of shares by the cost per share.
12 * $27 = $324
12 * $39.50 = $474
Now to find the difference, we subtract the old amount from the new amount.
$474 - $324 = $150