please help will makr brainleist to anyone who can help

here is some infomation about a group of 20 students.

boys;

left handed boys:3

right handed boys:9


girls:

left handed girls:2

right handed girls:6


A:a student is chosen randomly from the group. what s the probability that the chosen student is a girl? answer with fraction

B:what is the probability that the chosen student is a left handed girl? give in fraction