The following contingency table shows the results of a random survey of age and attitude to increasing the legal driving age to 21 years.

	Agree	Disagree	Unsure	Total
Under 25 years	50	61	79	116
25 up to 50 years	85	1	79	165
Over 50 years	92	83	26	201
Total	227	145	110	482

For this sample, what is the probability that a person is over 50 years OR disagrees with increasing the legal driving age? Please give your answer correctly rounded to two decimal places.