There is a 50% chance that Alice will visit China this year, while there is a 20% chance that she will visit Brazil this year. What is the probability that Alice will visit either China or Brazil this year, but NOT both?  Choose the correct option
A) 50%  B) 45%  C) 40%  D) 35%  E) 30%
P(China but not Brazil)=0.5*0.8= 
<gadget id="calculator">0.5*0.8</gadget>
<output>0.4</output>
0.4   P(Brazil but not China)=0.2*0.5= 
<gadget id="calculator">0.2*0.5</gadget>
<output>0.1</output>
0.1   P(China or Brazil but not both)=0.4+0.1= 
<gadget id="calculator">0.4+0.1</gadget>
<output>0.5</output>
0.5   The answer is 50%.
<result>A</result>
There is a 50% chance that Alice will visit China this year, while there is a 20% chance that she will visit Brazil this year. What is the probability that Alice will visit either China or Brazil this year, but NOT both?