Crazy Book club has a membership of 400 and operates 23 - horror book groups and 36 fantasy book groups. Before deciding whether to accept new members, the club council would like to know how many members regularly use each type of group. A survey of the membership indicates that 41.5% use the horror groups and 68% regularly use the fantasy groups, and 8% do not regularly use either of these facilities. What percentage of the 400 use at least one of the horror groups or fantasy groups?​