Final answer:
To determine the speed of the seagull, we convert the distance to an improper fraction and then divide by the time (as a fraction). After calculation, the speed of the seagull is found to be 18.75 mph, which does not match any of the provided answer options.
Step-by-step explanation:
If a seagull travels 12 1/2 miles in 2/3 of an hour, we can calculate its speed by using the formula:
Speed = Distance / Time
Let's convert the mixed number 12 1/2 to an improper fraction first:
12 1/2 = 25/2 miles
Now, we use the formula to find the speed:
Speed = (25/2) miles / (2/3) hour
To divide by a fraction, we multiply by its reciprocal:
Speed = (25/2) * (3/2) mph
Speed = (25*3)/(2*2) mph
Speed = 75/4 mph
Speed = 18.75 mph
After calculating, we find that none of the provided options (15 mph, 20 mph, 25 mph, 30 mph) exactly match our calculated speed. However, it looks like this might be a case where the answer options provided to us don't align with our calculation. To resolve the discrepancy, ensure to double-check the calculation and consult additional resources or the question source for clarification.