To find the percentage of 39 seconds in the given time duration scoring system, we first need to determine the equivalent percentage for 39 seconds.
Given that 1 minute is considered as 15%, we can convert 39 seconds to minutes by dividing it by 60:
39 seconds ÷ 60 seconds/minute = 0.65 minutes
Now, we can find the percentage equivalent of 0.65 minutes. Since 1 minute is considered as 15%, we can calculate the percentage of 0.65 minutes by multiplying it by 15%:
0.65 minutes × 15% = 0.0975 or 9.75%
Therefore, 39 seconds is equivalent to approximately 9.75% in the given time duration scoring system.