Hello, Joker37!

Organize the data in a chart.A group of 80 females consists of 54 dancers and 35 singers.

Each member of the group is either a dancer or a singer or both.

Find the probability that a randomly selected member of the group

is a singer, given that she is a dancer.

. .

There are 54 dancers.

Among them, 9 are also singers.

Therefore: .