Question. Greta, George and Gloria entered their turtles in the Key West Turtle Race. Greta’s turtle finished the race in 6 minutes. George’s turtle finished 2 minutes quicker than Greta’s. Gloria’s turtle took twice as long as George’s turtle. How long did it take Gloria’s turtle to finish the race?
Answer. 8
What step-by-step reasoning justifies that answer?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Reasoning: George’s turtle finished 2 minutes quicker than Greta’s so 6 - 2 = 4 minutes to finish. Gloria’s turtle took twice as long as George’s turtle, who finished in 4 minutes so 2 * 4 = 8 minutes.