An investor bought two shares of stock, which he sold for $36 each. If he had a profit of 20% on one of the shares and a loss of 20% on the other share, then on the sale of both shares combined, the investor had:
Choose the most appropriate option:
A) a profit of $5 B) a profit of $3 C) a loss of $3 D) a loss of $5 E) neither a profit nor a loss
The cost of the first stock was 36/1.2= 
<gadget id="calculator">36/1.2</gadget>
<output>30</output>
30, so the profit from it is 6.   The cost of the second stock was 36/0.8= 
<gadget id="calculator">36/0.8</gadget>
<output>45</output>
45, so loss from it is 9.   Overall the loss is $3.   The answer is a loss of $3.
<result>C</result>
An investor bought two shares of stock, which he sold for $36 each. If he had a profit of 20% on one of the shares and a loss of 20% on the other share, then on the sale of both shares combined, the investor had: