Final answer:
The percentage gain for the stock price of ROARJAGUAR (ticker: RJAG) rising from $40 to $80 is 100%. This doubling of price is also known as a 'two-bagger' because the stock price has doubled.
Step-by-step explanation:
To calculate the percentage gain when the stock price of a company rises from one value to another, we can use the formula for percentage change, which is (New Value - Old Value) / Old Value × 100%. For ROARJAGUAR (ticker: RJAG), the stock price increased from $40 to $80.
Using the formula:
Percentage Gain = (($80 - $40) / $40) × 100%
Percentage Gain = ($40 / $40) × 100%
Percentage Gain = 1 × 100%
Percentage Gain = 100%
Therefore, the gain is 100%, which is why this gain is referred to as a "two-bagger," implying that the stock price has doubled.