Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance that they both happen on a given trial is only 0.40.
What is the probability that event A happens?© BrainMass Inc. brainmass.com June 3, 2020, 5:00 pm ad1c9bdddf
<br>I think the difficulty with this question is that it is hard to visualise so I have drawn a diagram (see attachment).
<br>We are given:
<br>the chance of A = the chance of B
Help with a probability problem is given with a visual to explain.