Question 1194098
Draw this out.
P(U)=0.64
P(V)=0.36
P(both) is 0.18
prob. of one or the other is 0.64+0.36-0.18=0.82.
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If it is V (probability of 0.36), the probability it is U is 0.18, half of 0.36, so the answer to the conditional probability is 0.50.