Question 174990

The total number of people in the room expressed as a percent is 100%  Since are women, the number of men expressed as a percent is 100% - 80% = 20%

The problem can be solved be setting up the problem as a proportion. 

80%/20% = w/35, where w is the number of women in the room. Solve the proportion for w.  w = 80/20*35 = 4*35=140. If w = 140 and m =35, the total number of people is 140+35=175.

20%*175=.2*175=35 (OK)

I hope that this helps.