Jon Snow is recruiting for the Nights Watch Inc. He interviews two candidates with similar capabilities. The first candidate, named Khal Drogo, wants a daily salary of $(60+10X) where X is the number of hours worked in a day. Arya Stark, the second candidate, is looking for a daily salary of $(20+15X) where X is the number of hours worked in a day. If Jon Snow has exactly eight hours of daily works to distribute, then which of the following is/are true and why?
It is always better to appoint Khal Drogo for the entire day
It is always better to appoint Arya Stark for the entire day
It is never beneficial to divide the works between the two
It is always better to appoint either of them for the entire day