The local high school is having tryouts for the cross country team. the school does not have a track, so the runners run around the school's football field. the cross country coach determine that the width of the field is seventy yards shorter than the length.

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?