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To determine the time saved when traveling at 60 mph instead of 55 mph on a ten-mile trip, we can calculate the travel times for both speeds.

At 55 mph, the time to travel ten miles can be calculated using the formula:

Time = Distance / Speed

For 55 mph:

Time = 10 miles / 55 mph = 0.1818 hours (which converts to about 10.91 minutes).

For 60 mph:

Time = 10 miles / 60 mph = 0.1667 hours (which converts to about 10 minutes).

Now, to find the time saved, we subtract the time taken at 60 mph from the time taken at 55 mph:

Time saved = 10.91 minutes - 10 minutes = 0.91 minutes, or approximately 55 seconds.

Since the time saved is less than one minute, this aligns with the answer choice indicating that you would save less than one minute when changing from 55 mph to 60 mph. This understanding highlights the comparison of time through calculations, confirming the effectiveness of higher speed in reducing travel time, albeit in this case, the reduction is minimal.