Okay.. If P(A) = .02, and P(B) =.03.. Help me!

If P(A) = .02, and P(B) =.03
And P(A and B) = 0

What is P(A or B)?

How do I do this? Totally lost @_@

Thanks

When P(A and B) = 0, the events A and B are said to be MUTUALLY EXCLUSIVE.
When the events A and B are mutually exclusive
P(A or B) = P(A)+P(B) = 0.02+0.03 = 0.05