All people named Barry are nice, while only half of the people named Kevin are nice.  Three-fourths of people named Julie are nice, while 10% of people named Joe are nice.  If a crowd contains 24 people named Barry, 20 people named Kevin, 80 people named Julie, and 50 people named Joe, how many nice people are in the crowd?
Please reason step by step, and put your final answer within \boxed{}.
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