"Turn a math formula into a program" is not a novel kata idea. On top of that, there're already several katas which include calculating interest (mostly compound IIRC), so it is possibly an exact duplicate of something.

The user's not active anymore.

well, I'm glad this issue was fixed as opposed to compounded

Who wrote that test suite? That is an interesting layout.

This was fixed.

Your wish is granted.

didn't work on the following argument array: 10,93,79,16 - Expected actual value 10 to approximately equal expected value false (accepted relative error: 1e-9)

I don't understand.

Calculate how much the coding bootcamp will end up costing Ada,

If savings (93) exceeds fees (10), then why is expected result false

Input validation is still not specified, you should state the input validation is mandatory and what to return in the description.

See if it wasn't solved by JohanWiltink by now.

Resolved then.

Thank you - I've now added validation to not allow numbers as Strings.

Hey - being kind to someone who's trying for the first time is also not a novel concept. I appreciate that I'm not doing it in the ideal way - I am still learning. Genuine thanks for your feedback but please try to remember what it was like when you were starting this journey.

Thank you again.

Input validation is not a novel concept.

Just don't.

Turns out it's isNaN vs. Number.isNaN - same difference.

Fixed that for you.

That should get you some solutions, who can then vote. Accusing me of hoping everybody would vote this down in a heartbeat and it being retired within five minutes would be entirely SPOT ON.