Question

You are trying to overhear a juicy conversation, but from your distance of 15.0 , it sounds like only an average whisper of 35.0 . So you decide to move closer to give the conversation a sound level of 60.0 instead. How close should you come? (in cm)

Answer 1

Instead of posting the same question twice in one minute, you would be more likely to get help from me if you would show evidence of your own work or thought process.

Answer 2

I didn't mean to post the question twice and I have absolutely no idea where to start. I do not need the answer necessarily, but an equation to work with would be great. Thank you.