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Spoiler
30?
E: 30k?Yes, though I prefer spoilered answers with work (especially since something like Wolfram|Alpha can just spit out the answer here)
I'm curious about your retracted edit, since I saw your original message had just the correct answer - why 30k?
commentary/hint
Not too bad as long as you're familiar with your exponent and log rules from high school, though goes a bit further with them than most problems
i got it, no calculator needed
spoiler
https://gmtex.siri.sh/fs/1/School/Extra/Maths/Challenges solutions/log-5and6.html
All good - this is pretty much what I did as well.
i showed the question to my friend who isnt particularly bright in maths, he said 30 by just looking at it, i freaked out a bit but it might just have been a lucky guess
11 comments