Question 729988
Something seems wrong with the wording.  If you mean twice as many women as men, then could use
men, x
women, 2x
total participants, 3x



{{{7.5x+5(2x)=3850}}}

{{{17.5x=3850}}}

{{{x=220}}}


You want three times that, so 660 people gave in the fund raiser.