Answer:
$165
Explanation:
When transacting on shares the bid is the price at which you buy shares, while the ask is the price at which you sell shares.
Bid= $12.65
Ask= $13.40
Also remember when buying or selling shares there is a flat commission of $30
So when buying shares = (12.65 * 300) + commission
= (12.65*300) + 30= 3,825
When selling shares = (13.4* 300)-30
= 3,990
Thus net cost= Cost of selling - Cost of buying
= 3,990 - 3,825
= $165