Final answer:
The investor made a gain of $600 from the sale of 100 shares of stock. This gain is calculated by subtracting the original cost of the shares ($4350) from the selling price ($4950).
Step-by-step explanation:
The question is asking to calculate the gain or loss from the sale of stock. Initially, an investor purchased 500 shares at $43.50 each (totaling $21,750). Later on, 100 of those shares were sold for $49.50 per share.
The cost of the 100 shares originally purchased would be:
100 shares × $43.50/share = $4350
The selling price of the 100 shares is:
100 shares × $49.50/share = $4950
The gain from the sale is calculated as:
$4950 (selling price) - $4350 (cost) = $600
Therefore, the amount of gain on the sale of the 100 shares is $600.