To find out how many bottles are packed in 480 seconds, we can divide the total time by the time taken to pack one bottle.
Time to pack one bottle = 8.6 seconds
Total time available = 480 seconds
Now, we perform the calculation:
Number of bottles = Total time available / Time to pack one bottle
Number of bottles = 480 seconds / 8.6 seconds per bottle ≈ 55.81
Since you can't pack a fraction of a bottle, we round down to the nearest whole number, which is 55.
Therefore, the closest provided option, considering the calculations might have lead to slight adjustments, is:
50 bottles (though the exact is 55).
So, 50 bottles is the best fit from the provided options.