21 people travelled to a meeting. 12 used a train.
6 used a car.
7 did not use a train or a car.
Some used a train and a car.

Two people are chosen at random from those who used a train.
Find the probability that both these people also used a car.

This activity will you meet these educational goals: mathematical practices-you will make sense of problems and solve them, reason abstractly and quantitatively, and usemathematics to model real-world situations.directionsread the instructions for this self-checked activity type in your response to each question, and check your answers. at theend of the activity, write a brief evaluation of your work.