Survey of vacationers. A survey is taken of 100 people who vacationed at a dude ranch. The following information was obtained:
17 took horseback-riding lessons, attended the Saturday night barbecue, and purchased a tour guide.
28 attended the Saturday night barbecue and purchased a tour guide.
24 took horseback-riding lessons and purchased a tour guide.
42 took horseback-riding lessons but didn’t attend the barbecue. 86 took horseback-riding lessons or purchased a tour guide.
14 purchased only a tour guide.
14 did none of these three things.
How many attended the barbecue? How many purchased a tour guide?
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