\text{Average} = \frac{12.5 + 8}{2} = \frac{20.5}{2} = 10.25

February 22, 2026

$\text{Average} = \frac{12.5 + 8}{2} = \frac{20.5}{2} = 10.25$

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5Question: An elementary school student learns that the average time it takes for sunlight to reach Mars is about 12.5 minutes, while it takes 8 minutes to reach Earth. If a beam of light is sent simultaneously from the Sun to both Mars and Earth, what is the average travel time, in minutes, for the light to reach the two planets?
Solution: To find the average travel time, we compute the arithmetic mean of the two times: 12.5 minutes and 8 minutes. The formula for the average is:
Thus, the average time is 10.25 minutes.
\boxed{10.25}
Question: A seismologist uses an AI model that processes seismic wave data every 15 seconds to detect early earthquake signals. If the model runs continuously for 2 hours, how many data samples are processed in total?

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