Answer
$0.9$
Work Step by Step
We know that $P(\text{A and B})=P(A)P(B|A)$, thus $P(A)=\frac{P(\text{A and B})}{P(B|A)}=\frac{0.36}{0.4}=0.9$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - Chapter Test - Page 737: 22
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