Question

Of the 750 participants in a professional meeting,
450 are female and
1
2
of the female and
1
4
of the
male participants are less than thirty years old. If
one of the participants will be randomly selected to
receive a prize, what is the probability that the
person selected will be less than thirty years old?

Answer 1

750 participant, 450 female , so 750 - 450 = 300 male..

1/2 of female = 450 / 2 = 225 female are below 30
1/4 of male = 300 / 4 = 75 male are below 30

so probability will be 1 / (225 + 75) = 1/ 300