Question 1180896
.
Out of 50 people, 31 drink tea, 20 drink coffee, and 6 drink both tea AND coffee.
What is the probability that a person who is chosen randomly drinks tea OR coffee?
~~~~~~~~~~~~~~~~~~~~~~~


<pre>
    P(tea OR coffee) = P(tea) + P(coffee) - P(tea AND coffee) = {{{31/50 + 20/50 - 6/50}}} = {{{(31+20-6)/50}}} = {{{45/50}}} = {{{9/10}}} = {{{90/100}}} = 0.9 = 90%.    <U>ANSWER</U>
</pre>

Solved.