You can put this solution on YOUR website! Please help me solve this probability problem:
--------------------
Formula: P(A and B) = P(A)+P(B)-P(A or B)
----
Your Problem:
P(A and B) = 0.2 + 0.55 - 0.6
= 0.75 - 0.60
= 0.15
==================
Cheers,
Stan H.