Manhattan Review Averages question

[user2686]

This is from Manhattan Review Free Practice

This question is written incorrectly right?
because its impossible to have people paying less than the average while the rest paying only the average.
Here is the explanation:

I just want to make sure that there isn’t some indication in the question that I am missing.

Thanks in advance.

[cylverixxx]

Yes, you’re right! From the answer, it looks like they wanted to say “… twice the average bill amount …”

[user2686]

Thank you!!