Answer:
$2
Explanation:
Cost of 1 share = $8
He bought Shares for amount $12,000
So, He bought number of shares =

=
Now he sold 1500 shares for amount $15000.
So, S.P. of 1 share =

=
So, S.P. of 1 share = $10
C.P. of 1 share = $8
So, profit = S.P. - C.P.
= $10-$8
=$2
Thus he made $2 as profit on each share.