Question

In a certain college 4% of the boys and 1% of the girls are taller than 1.8 meter. Further 60% of the students are girls. If a student is selected at random and is taller than 1.8 meters, then the probability that the students is a girls is …

(a) 2/11 

(b) 3/11

(c) 5/11

(d) 7/11

Answer 1

(b) 3/11

Boys	Girls
40%	60%
4%	1%

P(getting a students taller than 1.8 m)