Please be nice, I have no idea if I'm on the proper website for this kind of help.
I don't know what my math problem would be classified as, so I'm just guessing that it fits here.
Nevertheless, I really need help with this problem. It's worth badly needed extra credit for a class of mine.
Relative humidity = [(vapor pressure) / saturation vapor pressure)] x 100
The question is: What is the vapor pressure when relative humidity is 67 %, and the temp is 80.6 F?
At 77 F the saturation vapor pressure is 31.67. At 86 F it's 42.43.