Mathematics

Matthias Rodriguez

20 July, 17:33

A survey is taken of 104 people who vacationed at a

dude ranch. The following information was obtained:

15 took swimming lessons, attended the barbecue, and

bought a tour guide.

33 attended the barbecue and bought a tour guide.

31 took swimming lessons and bought a tour guide.

22 took swimming lessons but didn't attend the

barbecue.

73 took swimming lessons or bought a tour guide.

1 only bought a tour guide.

27 did none of these things.