Answer:
$46.05 per stock
Explanation:
In order to determine the average stock price paid by the investor, just add both amounts paid for the stocks at the two different prices and then divide by 50:
[(20 x $45.75) + (30 x $46.25)] / 50 = ($915 + $1,387.50) / 50 = $2,302.50 / 50 = $46.05