p(not reading morn) = 1/2
i.e p(reading morn) = 1/2

p(not reading even) = 2/5
i.e p(reading even) = 3/5

P(reading both) = 1/5

p(reading morn or even) = p(reading morn) + p(reading even) - p(reading both)
                        = 1/2 + 3/5 - 1/5