The post office processed lots of packages every weekday

The post office processed lots of packages every weekday. The numbers of packages it processed per day were 80, 30, 100, 90 and x. If the median number of packages was 10 higher than the average (arithmetic mean) number of packages, which of the following could be x?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #76626