Final answer:
a) 88 packages. To determine the number of packages not sent as priority mail, we subtract 45% from 100% to find that 55% of packages are non-priority. Multiplying this percentage by the total number of packages shipped (160), we find that 88 packages will not be priority mail.
Step-by-step explanation:
The question involves calculating the number of packages that are not priority mail. Given that 45% of packages shipped are priority mail, we can find the percentage that are not priority mail by subtracting 45% from 100%, which gives us 55%. To find the actual number of packages, we multiply 55% by the total number of packages shipped, which is 160 packages.
To calculate this, we can convert the percentage to a decimal (55% = 0.55) and use it in the following equation:
Number of non-priority packages = Total packages × Percentage of non-priority (as decimal)
Number of non-priority packages = 160 × 0.55
Number of non-priority packages = 88
Therefore, the number of packages that will not go as priority mail is 88 packages.