There are 70 high school students attending the annual Johnson High School junior and senior dance. Of the 70 students attending , 30 of the are girls, 24 of the students are seniors, and 6 of the girls are seniors.

In Area 1, place the number of students who are girls and seniors.
In Area 2, place the number of girls who are not seniors.
In Area 3, place the number of seniors who are not girls.
In Area 4, place the number of students who are boy juniors.
Q: Given that a student is a senior, what is the probability that the student is a girl?

Question

There are 70 high school students attending the annual Johnson High School junior and senior dance. Of the 70 students attending , 30 of the are girls, 24 of the students are seniors, and 6 of the girls are seniors. 

In Area 1, place the number of students who are girls and seniors. 
In Area 2, place the number of girls who are not seniors.
In Area 3, place the number of seniors who are not girls.
In Area 4, place the number of students who are boy juniors.
Q: Given that a student is a senior, what is the probability that the student is a girl?

anonymous · Answer

number of senior girls/number of seniors

anonymous · Answer

25%

anonymous · Answer

What goes in the areas? 
Area 1: 6 
Area 2: 24
Area 3: 18
Area 4: 46

anonymous · Answer

nope, for Area 4, its 40(number of males)-18(boy seniors)

anonymous · Answer

The total is 88. Doesn't the total have to equal the 70 students?

anonymous · Answer

40-18=22
6+24+18+22=70

anonymous · Answer

oooh. k got it thanks:)

anonymous · Answer

np

anonymous · Answer

Q: Given that a student is a girl, what is the probability that she is a junior?

anonymous · Answer

(number of girls-number of senior girls)/(number of girls)

anonymous · Answer

80%?

anonymous · Answer

yep