At a local community college, seventy percent (70%) of a math class are taught on MWF, and thirty percent (30%) are taught on TR. Sixty percent ( 60% ) of the MWF sections are taught by full-time faculty, but full-time faculty only twenty percent (20%) of the TR sections. If Joan's professor for her math class is a part-time teacher (i.c., not full-time faculty), then what is the probability that she is taking a class that meets on MWF?