Yep, came across this near the end.

Would honestly have preferred the prompt include time as the restricting factor.

Spent way too much time going down a rabbit hole of making an elegant solution.

I hear you. What would you suggest, though? A modified duplicate of the input objects?

Corrected solution and included random test cases.

I believe the wording in the error message is the issue?
I've clarified what is expected.

Added random cases.
In addition, I've changed this Kata significantly to better reflect proper "objects" in Javascript and to make the description less confusion, overall.

TY @GiacomoSorbi

fixed equation and added random test cases

fixed math, should be ok now

added ranomd tests

added ranomd tests

added random test cases

added random test cases

added random test cases

Resolved issue of test cases.

Added random test cases