An investor purchased 100 shares of stock X at tk per share and sold them all a year later at 24 tk per share. If the investor paid a 2 percent brokerage fee on both the total purchase price and the total selling price, which of the following is closest to the investor's percent gain on this investment?

Question: An investor purchased 100 shares of stock X at tk per share and sold them all a year later at 24 tk per share. If the investor paid a 2 percent brokerage fee on both the total purchase price and the total selling price, which of the following is closest to the investor's percent gain on this investment?

Solution:
buying price = price os total shares + brokerage charges on buy price
=100 × (49/8) + 2% of {100 × (49/8)}
= 624.75 tk

similarly selling price = (24 × 100) - 2% of 2400
= 2352 tk

So, Profit = SP - CP
= 2352 - 624.75
= 1727.25 tk

% = (1727.25/624.75) × 100%
= 276 ~ 280%